Route a prompt to the user who should see it for the given actor.
Delegate (getDelegateUser(actor)) is the target when active and distinct
from the lead GM. When no delegate is available, or the delegate is the
lead GM, the lead GM handles the prompt.
Route a prompt to the user who should see it for the given actor.
Delegate (getDelegateUser(actor)) is the target when active and distinct from the lead GM. When no delegate is available, or the delegate is the lead GM, the lead GM handles the prompt.