On the Explorer tab, select one or multiple groups in the Models or Objects area.
Right-click in the selection.
Click Copy.
Right-click the target group and select Paste as > Create occurrence copy here, Paste as > Create definition copy here, Paste as > Create variant here, Paste as > Create group variants here.
All groups are created in the target group. If you select copies or shortcuts, the objects are not copied in the target group. If you select definition copies or group variants definition copies or group variants are created in the target group and used in the copied models instead of the source objects.