Auto Numbering for Groups, Items, and Subitems

I would like to see an option to see autonumbering added at the beginning of the description or in an adjacent column, and it would be excellent to see some connection between the group name, the item name, and the subitem name like shown in the picture. Right now I’m doing this manually because I couldn’t figure out how to get Auto-numbering or Auto-ID columns to follow this structure.