Navigate to your LEO unit. From the Administration menu select Unit administration > Users > Groups.
Click on the 'Groupings' tab:
From the list of groupings, choose the grouping that you would like to add your groups and click on the 'people' icon under the 'Edit' column:
On the next screen you can add groups and remove groups from your grouping. The column on the left lists groups that are in the grouping. The column on the right lists all the groups in your unit that are not already in the grouping:
To add a group, select the group from the 'Potential members' column on the right and click the 'Add' button. To remove a group, select the group from the 'Existing members' column on the left and click the 'Remove' button.
Click the 'Back to groupings' button when you are done. You should that your grouping now shows the groups that are part of it under the 'Groups' column.
You are able to add multiple groups to your groupings at a time by holding down the 'control' button (PC) or the 'Command' key (Mac), selecting the groups you wish to add or remove, and clicking the 'Add' or 'Remove' button.