Yes, you can record just your screen, without your camera or a face cam. Turn your camera off before you start recording.
You can turn off your camera before starting a recording by clicking the camera icon next to your camera device name (e.g. "FaceTime HD Camera") in the bottom left corner. This will turn off your camera feed during the recording.
You can also open the camera dropdown and choose No camera.
⚠️ Note: You can't turn the camera off while you record. If you recorded with the camera on, you can hide it afterwards: open the video in the editor, click Layout, and choose Screen only. See Layouts and scenes in Airtime Recorder.