Recording a side-by-side view with a ppt and speaker

Hi everyone,

I'm struggling since a couple of days now: I'm trying to record a side-by-side view mode with on the left the ppt and on the right multiple speakers cameras. However, it seems that I can't do that... But.. If someone else is sharing the ppt, I can. Moreover, a colleague tried on his computer with his own zoom account and was capable to do it directly but... If I'm trying with his account on my computer, it doesn't work. Can you help me please? Thanks in advance, Sophie