How to share a part of the screen using LIB-JITSI

Hi
I’m trying to share a portion of the screen, specially a

using LibJITSI. I want to share this div and whatever is inside the div to all the other participants. This is like a presentation on canvas.

Can someone expert from the community give me a pointer from where I can start?

Thank you very much in advance for your kind support.

Regards
Mohtashim