Clicking on the popup menu of the person you are chatting with brings up an option to invite or request screen sharing. I would imagine it requires you have some iCloud contact information associated with the other person, but I'm not sure.
Clicking on the popup menu of the person you are chatting with brings up an option to invite or request screen sharing. I would imagine it requires you have some iCloud contact information associated with the other person, but I'm not sure.