Am Donnerstag 05 Juli 2018 schrieb Mike Bird:
> > Hello Mike,
> >
> > in TCC -> Desktop -> Window Behavior -> Title Bar Actions / Window
> > Actions
> >
> > are a couple options to control window behavior with mouse clicks on the
> > title bar and window area etc.
>
> Also right-click on any title bar and then Configure Window Behavior /
> Actions.
>
> > I have found no way to assign a mouse click to a specific shortcut for a
> > program, though, at a glance.
>
> xbindkeys can start commands using clicks and modifiers but I don't know
> how to "minimize window" as OP Michael desires using clicks and modifiers.

It's possible, I just tried and succeeded.

TCC > Desktop > Window Behavior > Window Actions > Inner Window, Title Bar & 
Frame:
for "Modifier Key + left button" choose from drop down menu on right side.

Somewhere you can configure which key is the "Modifier Key".

Kind Regards,
Stefan