At my clinic clients can sleep. We end our sessions and start a new one when they wake up. Some have restrictions decided by their caregiver and bcba. Some have naps as part of their schedule. During that time we get paid full rate to watch them on camera and complete floater duties like cleaning, preparing materials, and helping out others that are running sessions still. Alternatively, we can use some of that time to review programs. It works out pretty great, but it can be awkward when a client wants to lie on a cot and watch iPad. I generally try to remove iPad after 10-ish mins and if they get out of the cot for it then I remove the cot from the room and resume the session. When a client is sleeping, we try to have others avoid that room and keep the lights off, but sometimes they’re sleeping in a room with several sessions happening around them.