 Also for "All groups":  - The semantics of the button at "All groups" is "Add group" - The semantics of the button at a group is "Add subgroup" The plus symbol could be the one of the PR https://github.com/JabRef/jabref/pull/9329.  The implementation needs to be differen.t --- Historic text:  (This is a duplicate of https://github.com/koppor/jabref/issues/529) Other alternatives are listed in: https://github.com/JabRef/jabref/issues/8398
Also for "All groups":
The plus symbol could be the one of the PR #9329.
The implementation needs to be differen.t
Historic text:
(This is a duplicate of JabRef#529)
Other alternatives are listed in: #8398