After a snapshot is wrapped into an event, does this event need to be assigned to the specified VCAs?
I’m afraid I don’t understand what you’re asking. When you say “the specified VCAs,” where are they specified? When you say “after a snapshot is wrapped in an event,” do you mean “after a snapshot instrument is added to an event?”
Most importantly, what behavior are you trying to achieve? Without knowing what you’re trying to do, we can’t tell you whether the method you describe will achieve it.