Any premium member, if i'm not mistaken 
Although, as a gold member, you might be restricted to the number you can TD at a time
Any premium member, if i'm not mistaken 
Although, as a gold member, you might be restricted to the number you can TD at a time
Here's the "How To":
https://support.chess.com/customer/portal/articles/1444841
There are 6 or 8 articles on tournaments in the Help & Support (bottom of the page, the line next to the green pawn). Probably a little experience playing in other tournaments will be a help.
I want to make one, but I dont know if I can/how.