I asked the person in charge of the seminar and they where not sure if the room had a mixer to get a feed from and they only have one hand-held wireless microphone.
I plan on putting a wireless on the presenter and will decide whether we pass around the wireless microphone that I have that will go directly into the camera and not over the PA or just put a microphone on a stand. The people will probably be tapping the hand-held that I give them because they will not hear it over the PA system.