Topic: Mono on / off on all outputs simultaneously?

Hi Guys

I'm an older FF400 user with totalmix, excuse my terminology, i love my FF400 and never have to check these forums so i apologise in advance if this has already been discussed.

In totalmix, on the right, I can select the monitor out outputs and have a mono button that affects only that output.

Is there a global mono option or a way that i can affect outputs 1+2 and 3+4 at the same time?

I have two pairs of monitors and a midi control to toggle mono on/off on outputs 3+4, i have to manually change the outputs to select which is affected by the mono.

Thanks in advance!