Same activity for two different zones

I am trying to setup “Watch Blu ray” activity for the main zone and the second zone. Both zones are sharing the blu ray player. I want to set it up some how that when the “Watch Blu ray” activity is active for both zones at the same time and when I turn off that activity in the main zone, the blu ray player stays on since the second zone is still using that to watch blu ray. Is there any way to do so? Has anybody done a setup like this?