Locking the camera but allowing chat?

Is there a way to lock the camera but still allow the players to chat? I mean lock it while it's doing stuff, too, just disable the user control over the camera.

Cinematic mode stops them from chatting, but just using the camera changing commands allows the players to move the cameras still.

Thanks.

umm yes, lock it to a unit. with offset or whatever

a periodic trigger that has a period of X seconds and uses "Set field of camera over X + 1 seconds" should work. Make sure you set all the aspects of the camera field you want to lock.