Recording - only me and my shared screen

Hello I have a question, 

I want to record my webinar but only me or shared screen with only my video. I don't want the other participants to appear in the recording. Also it’s interactive webinar so the participants may speak or ask questions but I want only their voice to be recorded and not their faces/video screen. Is it possible? And if so, what settings I have to put on? 

I’ve already tried different options but there were always other participant’s screen recorded. 

Thank you for your help!