This enhancement request comes from the discussion on #84548.
When you create a new label document (File -> New -> Labels), a pop-up window appears, in which you can choose many settings. The problem is that it is not possible to ADD a database: you can only use one that was previously added.
In my opinion, there should be a way, in this pop-up window, to add a database.
and thanks for this one too, Yvan.