How do I find out mb commands to add to mouse events in tint2?

I would like to add other applications to the panel when I click the mouse

With how many clicks? Using the default

rightclick to Mabox M (RMB -> panel settings) (left side of Tint2) and Return (Add/Remove Launchers...)

or assign a mouse event to
jgtint2-pipe -s
I’m not sure about the correctness of this 2nd method.
(the proper environment of jgtint2launcher I have not found (too tiny characters))