I just watched a YouTube video of home assistance controlling this camera, when not home it will point to the area. When home, it turns itself backwards so points to the wall.
as far as i know theres still no dedicated native reolink binding in openHAB. people usually go through the IP Camera binding for these.
in my experience the IP Camera binding can talk to a lot of reolink models over rtsp/onvif, and ptz works IF the cam exposes it cleanly over onvif. the e1 pro series is a bit hit or miss on that depending on firmware. id try adding it as an onvif thing first and see if you get pan/tilt channels. if onvif ptz is empty, you might be stuck with http CGI commands or a rule that hits the reolink api directly.
probably worth checking the IP Camera binding docs for onvif ptz channel names before buying into a whole other stack. shrug
I have one of those cameras, although it has been disconnected for a while. But it could be connected to OH as an Onvif thing via the ipcamera binding. Motion Control was IIRC not that great, but it was possible to configure preset positions in the native reolink app and then command the camera to apply those via OH, which sounds like it should solve your use case.