[firro]

As above,

I want open the groups popup in pvr by mapping it to a button on my remote controller using keymap editor.

I couldnt find it..

There is "Open group manager" , "next group" etc. but not open the group window.

Does anyone know if this is even possible?

[enricoluigi]

did you find a solution for your problem?
im also looking for it on android boxes

[Daveabuk]

I used key mapping and pointed the "o" button on my remote to open the group popup. From there you just press left or right to change group. I cannot remember which option it was but ifyou try you'll find it.