Mark this device as the projector, and assign per-session presenters + slide visibility for the room.
Mark this device as the presenter — the laptop driving the projector. When active, opening a session page puts it straight into the 16:9 present view, it follows remote control commands, and interactive slides show the live read instead of input fields. Set this on the projector laptop before you start presenting.
Pick who can drive each session — you can always drive too. Until you tick Show all slides, only you and the assigned presenter see past the landing slide; tick it to reveal the full deck to everyone in the room, live.