Question

I work on my 13" laptop screen a lot and so I use the "stubby" version of the mixer. I have to click the blue arrow to get to the inserts and sends. Sometimes I end up with several channels expanded. I would love to have a button to collapse them all.

Answer 1

You can do this a littlebit differently then you would expect.

Select all Channels you want colapsed , then hold the 'ALT/Option' key while clicking the little arrow for colapsing the channel in the Mixer (F3)

Answer 2

What Final Saga said previously although there is no need to select all of the channels, ALT + click on any channel's collapse button.

Inversely, ALT+click on any closed channel's > icon to open that one and close all of the others.