diff --git a/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java b/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
index 3aecce0..725d126 100755
--- a/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
+++ b/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
@@ -34,10 +34,29 @@ public class Groups {
     @ManyToOne
     @JoinColumn(name = "lecturer_id")
     private Lecturer lecturer;
+    private String zaj_cyk_id;
+    private String gr_nr;
 
     public Groups() {
     }
 
+    public String getGr_nr() {
+        return gr_nr;
+    }
+
+    public void setGr_nr(String gr_nr) {
+        this.gr_nr = gr_nr;
+    }
+
+    public String getZaj_cyk_id() {
+        return zaj_cyk_id;
+    }
+
+    public void setZaj_cyk_id(String zaj_cyk_id) {
+        this.zaj_cyk_id = zaj_cyk_id;
+    }
+
+
     /**
      * Groups
      * 
@@ -60,6 +79,43 @@ public class Groups {
         this.type = capacity >= 50 ? GroupType.LECTURE : GroupType.CLASS;
     }
 
+    /**
+     * Groups
+     * 
+     * @param capacity capacity given to the groups
+     * @param room     room given to the groups
+     * @param course   course given to the groups
+     * @param time     time given to the groups
+     * @param endTime  end time of class in minutes
+     * @param day      day given to the groups
+     * @param lecturer lecturer given to the groups
+     * @param zaj_cyk_id number of class in the term
+     * @param gr_nr Number of class/course
+     */
+    public Groups(int capacity, String room, Course course, int time, int endTime, WeekDay day, Lecturer lecturer, String zaj_cyk_id, String gr_nr) {
+        this(capacity, room, course, time, endTime, day, lecturer);
+        this.zaj_cyk_id = zaj_cyk_id;
+        this.gr_nr = gr_nr;
+    }
+
+    /**
+     * Groups
+     * 
+     * @param capacity capacity given to the groups
+     * @param room     room given to the groups
+     * @param course   course given to the groups
+     * @param time     time given to the groups
+     * @param day      day given to the groups
+     * @param lecturer lecturer given to the groups
+     * @param zaj_cyk_id number of class in the term
+     * @param gr_nr Number of class/course
+     */
+    public Groups(int capacity, String room, Course course, int time, WeekDay day, Lecturer lecturer, String zaj_cyk_id, String gr_nr) {
+        this(capacity, room, course, time, time + DEFAULT_CLASS_TIME, day, lecturer);
+        this.zaj_cyk_id = zaj_cyk_id;
+        this.gr_nr = gr_nr;
+    }
+
     /**
      * Create groups with default class duration
      * 
diff --git a/buisnesslogic/src/test/resources/Zajecia.xlsx b/buisnesslogic/src/test/resources/Zajecia.xlsx
index 91d7f5e..71e0ba7 100755
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diff --git a/restservice/src/main/resources/Zajecia.xlsx b/restservice/src/main/resources/Zajecia.xlsx
index 91d7f5e..71e0ba7 100755
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diff --git a/restservice/src/test/resources/Zajecia.xlsx b/restservice/src/test/resources/Zajecia.xlsx
index 91d7f5e..71e0ba7 100755
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