diff --git a/buisnesslogic/src/main/java/com/plannaplan/App.java b/buisnesslogic/src/main/java/com/plannaplan/App.java
deleted file mode 100644
index dbfe26e..0000000
--- a/buisnesslogic/src/main/java/com/plannaplan/App.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.plannaplan;
-
-/**
- * Hello world!
- *
- */
-public class App 
-{
-    public static void main( String[] args )
-    {
-        System.out.println( "Hello World!" );
-    }
-}
diff --git a/buisnesslogic/src/main/java/com/plannaplan/Assigner.java b/buisnesslogic/src/main/java/com/plannaplan/Assigner.java
new file mode 100644
index 0000000..3dd98a2
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/Assigner.java
@@ -0,0 +1,26 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.Historable;
+import com.plannaplan.interfaces.ProtectedAction;
+
+public class Assigner implements Historable, ProtectedAction {
+
+    public Assigner() {
+    }
+
+    public void assing() {
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void addActionToHistory() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/Book.java b/buisnesslogic/src/main/java/com/plannaplan/Book.java
deleted file mode 100644
index 5440913..0000000
--- a/buisnesslogic/src/main/java/com/plannaplan/Book.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.plannaplan;
-
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.Id;
-
-@Entity
-public class Book {
-
-    @Id
-    @GeneratedValue
-    private Long id;
-    private String name;
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    // standard constructors
-
-    // standard getters and setters
-}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/BookRepository.java b/buisnesslogic/src/main/java/com/plannaplan/BookRepository.java
deleted file mode 100644
index d57bb7a..0000000
--- a/buisnesslogic/src/main/java/com/plannaplan/BookRepository.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.plannaplan;
-
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.stereotype.Repository;
-
-@Repository
-public interface BookRepository extends JpaRepository<Book, Long> {
-}
diff --git a/buisnesslogic/src/main/java/com/plannaplan/BookService.java b/buisnesslogic/src/main/java/com/plannaplan/BookService.java
deleted file mode 100644
index c433d5d..0000000
--- a/buisnesslogic/src/main/java/com/plannaplan/BookService.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package com.plannaplan;
-
-import java.util.List;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
-@Service
-public class BookService {
-
-    @Autowired
-    private BookRepository bookRepository;
-
-    public List<Book> list() {
-        return bookRepository.findAll();
-    }
-}
diff --git a/buisnesslogic/src/main/java/com/plannaplan/Configurator.java b/buisnesslogic/src/main/java/com/plannaplan/Configurator.java
new file mode 100644
index 0000000..1d131d6
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/Configurator.java
@@ -0,0 +1,20 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.ProtectedAction;
+import com.plannaplan.models.ConfigData;
+
+public class Configurator implements ProtectedAction {
+
+    public Configurator() {
+    }
+
+    public void config(ConfigData data) {
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/Controller.java b/buisnesslogic/src/main/java/com/plannaplan/Controller.java
new file mode 100644
index 0000000..e9384ea
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/Controller.java
@@ -0,0 +1,30 @@
+package com.plannaplan;
+
+public class Controller {
+    public Controller() {
+    }
+
+    public void startApp() {
+    }
+
+    public void assignCourse() {
+    }
+
+    public void addUnavailibility() {
+    }
+
+    public void addGroup() {
+    }
+
+    public void editGroup() {
+    }
+
+    public void getHistoryAtPoint() {
+    }
+
+    public void config() {
+    }
+
+    public void createTransfer() {
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/GroupAdder.java b/buisnesslogic/src/main/java/com/plannaplan/GroupAdder.java
new file mode 100644
index 0000000..552d980
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/GroupAdder.java
@@ -0,0 +1,26 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.Historable;
+import com.plannaplan.interfaces.ProtectedAction;
+
+public class GroupAdder implements Historable, ProtectedAction {
+
+    public GroupAdder() {
+    }
+
+    public void addGroup() {
+    }
+
+    @Override
+    public void addActionToHistory() {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/GroupEditor.java b/buisnesslogic/src/main/java/com/plannaplan/GroupEditor.java
new file mode 100644
index 0000000..79705f0
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/GroupEditor.java
@@ -0,0 +1,19 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.ProtectedAction;
+
+public class GroupEditor implements ProtectedAction {
+
+    public GroupEditor() {
+    }
+
+    public void setNewCapacity(int capaity) {
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/HistoryResolver.java b/buisnesslogic/src/main/java/com/plannaplan/HistoryResolver.java
new file mode 100644
index 0000000..fa71368
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/HistoryResolver.java
@@ -0,0 +1,22 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.ProtectedAction;
+
+public class HistoryResolver implements ProtectedAction {
+
+    public HistoryResolver() {
+    }
+
+    public void getHistoryAtPoint() {
+    }
+
+    public void reproduce() {
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/SampleClass.java b/buisnesslogic/src/main/java/com/plannaplan/SampleClass.java
deleted file mode 100644
index 3bfb020..0000000
--- a/buisnesslogic/src/main/java/com/plannaplan/SampleClass.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.plannaplan;
-
-public class SampleClass {
-    private String xd;
-
-    public SampleClass(String xd) {
-        this.setXd(xd);
-    }
-
-    public String getXd() {
-        return xd;
-    }
-
-    public void setXd(String xd) {
-        this.xd = xd;
-    }
-
-}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/TransferCreator.java b/buisnesslogic/src/main/java/com/plannaplan/TransferCreator.java
new file mode 100644
index 0000000..56d5606
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/TransferCreator.java
@@ -0,0 +1,26 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.Historable;
+import com.plannaplan.interfaces.ProtectedAction;
+
+public class TransferCreator implements Historable, ProtectedAction {
+
+    public TransferCreator() {
+    }
+
+    public void createTransfer() {
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void addActionToHistory() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/UnavailabilityAdder.java b/buisnesslogic/src/main/java/com/plannaplan/UnavailabilityAdder.java
new file mode 100644
index 0000000..5412709
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/UnavailabilityAdder.java
@@ -0,0 +1,26 @@
+package com.plannaplan;
+
+import com.plannaplan.interfaces.Historable;
+import com.plannaplan.interfaces.ProtectedAction;
+
+public class UnavailabilityAdder implements Historable, ProtectedAction {
+
+    public UnavailabilityAdder() {
+    }
+
+    public void add() {
+    }
+
+    @Override
+    public void validateAction() {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void addActionToHistory() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/configutils/FileToDatabaseMigrator.java b/buisnesslogic/src/main/java/com/plannaplan/configutils/FileToDatabaseMigrator.java
new file mode 100644
index 0000000..a19a5eb
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/configutils/FileToDatabaseMigrator.java
@@ -0,0 +1,12 @@
+package com.plannaplan.configutils;
+
+import java.io.File;
+
+public class FileToDatabaseMigrator {
+    public FileToDatabaseMigrator() {
+    }
+
+    public void migrate(File file) {
+
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java b/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
new file mode 100644
index 0000000..c617b23
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
@@ -0,0 +1,52 @@
+package com.plannaplan.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Groups {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private Long courseId;
+    private int time;
+    private String room;
+    private int capacity;
+
+    public Groups() {
+    }
+
+    public int getCapacity() {
+        return capacity;
+    }
+
+    public void setCapacity(int capacity) {
+        this.capacity = capacity;
+    }
+
+    public String getRoom() {
+        return room;
+    }
+
+    public void setRoom(String room) {
+        this.room = room;
+    }
+
+    public int getTime() {
+        return time;
+    }
+
+    public void setTime(int time) {
+        this.time = time;
+    }
+
+    public Long getCourseId() {
+        return courseId;
+    }
+
+    public void setCourseId(Long courseId) {
+        this.courseId = courseId;
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/interfaces/EventCreator.java b/buisnesslogic/src/main/java/com/plannaplan/interfaces/EventCreator.java
new file mode 100644
index 0000000..3d1cd32
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/interfaces/EventCreator.java
@@ -0,0 +1,5 @@
+package com.plannaplan.interfaces;
+
+public interface EventCreator {
+    void update();
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/interfaces/Historable.java b/buisnesslogic/src/main/java/com/plannaplan/interfaces/Historable.java
new file mode 100644
index 0000000..db1ea92
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/interfaces/Historable.java
@@ -0,0 +1,5 @@
+package com.plannaplan.interfaces;
+
+public interface Historable {
+    void addActionToHistory();
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/interfaces/ProtectedAction.java b/buisnesslogic/src/main/java/com/plannaplan/interfaces/ProtectedAction.java
new file mode 100644
index 0000000..707e0e7
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/interfaces/ProtectedAction.java
@@ -0,0 +1,5 @@
+package com.plannaplan.interfaces;
+
+public interface ProtectedAction {
+    void validateAction();
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/models/ConfigData.java b/buisnesslogic/src/main/java/com/plannaplan/models/ConfigData.java
new file mode 100644
index 0000000..15be230
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/models/ConfigData.java
@@ -0,0 +1,29 @@
+package com.plannaplan.models;
+
+import java.io.File;
+import java.util.Date;
+
+public class ConfigData {
+    private Date start;
+    private Date end;
+    private File file;
+
+    public ConfigData(Date start, Date end, File file) {
+        this.start = start;
+        this.end = end;
+        this.file = file;
+    }
+
+    public File getFile() {
+        return file;
+    }
+
+    public Date getEnd() {
+        return end;
+    }
+
+    public Date getStart() {
+        return start;
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/repositories/GroupRepository.java b/buisnesslogic/src/main/java/com/plannaplan/repositories/GroupRepository.java
new file mode 100644
index 0000000..060685f
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/repositories/GroupRepository.java
@@ -0,0 +1,11 @@
+package com.plannaplan.repositories;
+
+import com.plannaplan.entities.Groups;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface GroupRepository extends JpaRepository<Groups, Long> {
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java b/buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java
new file mode 100644
index 0000000..5c61643
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java
@@ -0,0 +1,12 @@
+package com.plannaplan.services;
+
+import com.plannaplan.repositories.GroupRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class GroupService {
+    @Autowired
+    private GroupRepository repo;
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/statisticutils/Statistics.java b/buisnesslogic/src/main/java/com/plannaplan/statisticutils/Statistics.java
new file mode 100644
index 0000000..ac75813
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/statisticutils/Statistics.java
@@ -0,0 +1,10 @@
+package com.plannaplan.statisticutils;
+
+public class Statistics {
+
+    public Statistics() {
+    }
+
+    public void getAll() {
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/test/java/com/plannaplan/AppTest.java b/buisnesslogic/src/test/java/com/plannaplan/AppTest.java
deleted file mode 100644
index eceee4c..0000000
--- a/buisnesslogic/src/test/java/com/plannaplan/AppTest.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.plannaplan;
-
-import java.util.List;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.junit.Ignore;
-import org.springframework.beans.factory.annotation.Autowired;
-
-/**
- * Unit test for simple App.
- */
-public class AppTest {
-    @Autowired
-    private BookService bookService;
-
-    @Ignore
-    @Test
-    public void whenApplicationStarts_thenHibernateCreatesInitialRecords() {
-        List<Book> books = bookService.list();
-
-        Assert.assertEquals(books.size(), 1);
-    }
-}
diff --git a/restservice/src/main/resources/application.properties b/restservice/src/main/resources/application.properties
index c2bcd3d..ea42903 100644
--- a/restservice/src/main/resources/application.properties
+++ b/restservice/src/main/resources/application.properties
@@ -1,8 +1,10 @@
 spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
-spring.datasource.url=jdbc:mysql://172.20.0.2:3306/test
+spring.datasource.url=jdbc:mysql://172.20.0.3:3306/test?useUnicode=yes&characterEncoding=UTF-8
 spring.datasource.username=root
 spring.datasource.password=example
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+spring.jpa.open-in-view=true
 spring.jpa.hibernate.ddl-auto=create
+spring.jackson.serialization.fail-on-empty-beans=false
 
 server.port=1285
\ No newline at end of file