Hi pafurjiaz,

Here's a video showing how to rename a group or assign the selected objects to a group by clicking on the group's name: https://moi3d.com/forum/messages.php?webtag=MOI&msg=10815.34

Commands that can be bound to a shortcut key are:

Group
Ungroup
Ungroupall

and a plugin for combining groups:

https://moi3d.com/forum/messages.php?webtag=MOI&msg=10912.1

- Peer

Put an object in an existing group & Rename the Group

Sub Group :)

Thanks @pressure and @Pilou. :)