Thanks so much sknoop1971. That is what I suspected. Nice to have it confirmed.

That selection seems to be disabled by our Webex-Admin. Here's my screenshots (while recording and before recording). 

I have this issue too. I work for a large corporation and do not have access to the host account. For future reference, how do you record to desktop? When we're in the meeting, we press "Record" and have no control over putting that recording on our ...