Could someone tell me how to exactly add a team in Zwift as I am about to throw my tablet against the wall
What exactly are you trying to do?
Zwift has nothing built in for team management. The most we can do is to add a “tag” to our user names. e.g. I have “[Vision]”.
Some clubs and teams have in-game jerseys. The process for that is completely opaque, and almost no one in userland has any idea how to get a jersey in game. It might be a case of knowing someone internal to Zwift. It might be a case of paying for the privilege. It might be completely random, or only for “good causes”.
Just an additional thought, do you mean on the ZwiftPower website?
That’s independent of Zwift itself.