This will get you to the additional general settings.

Keep screen active
Enable this to keep your screen and device active when streaming or recording.
Lock Screen
Is default On. Enable this to lock your screen and controls when you use your device as a handset (hold it to your ear). The proximity detector of the device will be used to detect this.
Display network jitter meters
Display meters indicating the jitter on the IN stream and, if supported by the receiver, on the OUT stream.