I’ve finally figured this out and I remember coming across this question before, so I hope this is helpful to someone in the future.
http://williamgs.com/blog/?p=1053
Select Group Actor / Renaming Groups (without selecting Group Members)
- Verify “Allow Group Selection” is enabled
- R-Click group actor or any member: Groups > Unlock
- Select group actor
- CTRL+SHIFT+G (disable “Allow Group Selection”)
- Deselect all group members individually. This will leave only the group itself selected
- Rename the group actor
- [Optional] CTRL+SHIFT+G (re-enable “Allow Group Selection”)
- [Optional] R-Click group: Groups > Lock
Select Group Members (without selecting Group Actor)
- Verify “Allow Group Selection” is enabled
- Verify group is Locked
- Select any group member (but not the Group Actor)
Add Group Members
- Verify “Allow Group Selection” is enabled
- Group Locked/Unlocked doesn’t matter
- Select existing group actor or any member
- CTRL+Select: Add new members to selection
- R-Click on new member: Groups > Add to Group
Remove Group Members
Do NOT R-Click the member: Groups > Remove from Group. This will destroy your group because everything is still selected
- Verify “Allow Group Selection” is enabled
- R-Click group actor or any member: Groups > Unlock Group
- Select members for removal only
- R-Click any selected: Groups > Remove from Group
- [Optional] R-Click group: Groups > Lock