Helping via the editor.

I've came along to forums, to find out by any chance is it possible to have multiple people working on the editor, 
or is it only a single project, and you got to send it off to them, I'm honestly curious -
 and seeking answers to further help me if my issue, I'm trying to figure out, cause there's no video explaining it.

There's no multi edit for multiple people to be working on a shared workspace like roblox, However you can use git to manage your project with multiple people 

May I ask, is git like a separate software, or is it like a feed or something?