possible to latch memory locations ?

[Mishabou]

I use memory locations to show/hide different tracks.

Is it possible to latch/unlatch memory locations ?

For example I have three individual groups that will show/hide A: Drums, B:Bass, C:Guitars. If I'm working on the drums group and needs to see the Bass, I would like to turn on that group without loosing my drums.

Of course I can create another separate Drum and Bass group but this becomes a drag when working with big film template.