ASL interpreters rotation in the new ASL channel

[SandraMRP]

 I have been testing the new ASL interpretation channel. I generally have two ASL interpreters that rotate every 15/20 minutes or so.

I have not used the channel yet in a webinar because I can't figure out how ASL interpreters activate/deactivate their videos when they rotate in their function. Any ideas on how to do this? Are they able to do this on their own or does the host need to intervene? Thanks in advance for your help.