Multiple videos on plus PPT on shared screen during webinar, YouTube streaming and recording

Hi, 

Yes definitely we can do that! just make sure u choose correct attendees view :

• Attendee View: Set the video layout that the attendees see during the webinar. By default, they see the same view as the host (the host's default view is gallery view).
  • Follow Host's View: Participants will see the same view that the host is using, whether active speaker view or gallery view. If the host is sharing their screen, the attendees will have side by side mode with the host's share and the active speaker's video. The attendees can adjust the share and video size.
  • Speaker: Speaker view switches between the active speakers in the webinar, with other video panelists above the active speaker when not speaking. 
  • Gallery: Gallery view presents either 25 or 49 participants (if enabled in client Settings) on the screen in equal size. If there are more panelists than allowed to fit, multiple pages of gallery view will be created. 

Here is some link for your reference : https://support.zoom.us/hc/en-us/articles/115004834466-Managing-attendees-and-panelists-in-a-webinar#h_01EYVHFHQMD1G3YSZB8TNG9E8P 

When you share screen and have 3 panalist in the Zoom itself as Nafi explained above.  However in the live stream and recording the active speaker is in the top righthand corner.  You will NOT see the 3 panelists at the same time.

Thank you. Is there any solution to make sure that the live stream on YouTube and the recording show the three panellists and the shared screen at all times?

You cannot do this directly from Zoom.  What you can do is take is caputure the screen using NDI and live streaming it from vMix or similar.