I found two of the hologram transponders in the backstage area just after talking to Dean, one on a wall in plain sight, and one behind a couch. I can't find a third one so now there is only one hologram, the one that walks the stage. Anyone know how to shut down this hologram?
thanks

Ok to specify it's the Tampico, does Dean Domino's Blackmail evidence holotape do anything?

The blackmail tape just lets you ask Dean about it. Don't bother with the holograms, just leg it to the projector and see what happens.

As soon as you've finished talking to Dean head to the door which leads to backstage and behind that door is the hologram projector