Add object to an "existing group" in scene explorer

[markus]

It would be very helpful if there was a way to add/attach an object to an existing group in the Scene Explorer.

In the current version (I'm still using 2021) there is only "add to new parent" (normal linking) or "add to new group"

Attaching to group would be useful here. 

The only way to attach to an existing group that I know is by clicking the pink brackets in the viewport. This is a bit of hit and miss, especially when you have many groups in a hierarchy.

[Kranos_Orphydian]

bump this!