Sharing images/powerpoint presentation during meetings

Hello techies,
How many people can attend a meeting on Jitsu?
If I want to share a power point presentation or JPEGs of my art, is that possible during the meeting?
Is it possible to share text during the meeting from a Word document?
I am a creative person who is not very technical and this will be my first time. My plan is to host a short, interactive online meeting of 30 minutes.
Any tips appreciated! Thank you, Kathryn.