When setting up RingCentral Rooms on the iPad (controller), you need to ensure the settings are correctly configured to set it for kiosk mode. This will allow RingCentral Rooms to start and prevent users from using other applications on the iPad.
Note: There is a known issue with iOS 12 wherein the iPad goes to sleep when in Guided Access mode. In order to prevent this, please update the device to iOS 12.1.11 or later, then enable the Mirror Display Auto-Lock setting as shown in
Step 9 under Set up Guided Access.