Zooming with MacBook trackpad in KantanMapper

Hi All, I am new to TouchDesigner. I’m learning how to use it for video mapping with KantanMapper.

KantanMapper zooming is done with the middle-mouse button. I use a MacBook trackpad.

So I’m trying to figure out how to zoom in and out with a MacBook trackpad in the KantanMapper edit window. I do have the “middle click alternative” set in preferences (see image), but that’s not working.

Is this possible? Or is there a zoom in/out keystroke I can use?

Thanks
Chris

Kind of hack

I downloaded and installed Karabiner Elements on my MacBook. Karabiner Elements enabled me to assign the mouse middle-click action to a keystroke (in my case I use the Fn-LeftControl key combo). Now I can zoom in and out with a MacBook trackpad in the KantanMapper edit window.

Karabiner Elements: [url]https://pqrs.org/osx/karabiner/[/url]