How do I identify toolbars?

I would like to make a few changes to my toolbars, like eliminating duplicates (B I U A), and I really want to add the ‘export as pdf’ button to ‘some’ toolbar, but I don’t know which one…

(Edit: activated screenshot -AK)

Hello,

At the left edge of each toolbar is 5 vertical dots. Right mouse click it and the toolbar will pop up. The name of the toolbar is in the heading:

Thank you! RIGHT click is what I had missed…

If the toolbar position is locked, there won’t be any vertical points, but you can still right-click there.