New item groups are always added to the end of the list. Hold down the left mouse button and drag the new group to your preferred position in the list. Item groups can be nested as deeply as required.

1. Select  Insert to add the active item group to the target group as a subgroup.
2. Select  Add to insert the active item group below the target group but at the same level.
3. Select  Merge to merge the active group and the target group.
   Important: All items in the moved group are added to the target group, the moved group disappears immediately.