Is it worth having a so called 'B' Team

I am wondering very much wether or not it is worth having an 'B' team because it means that if there is a driver that i would like to try to gain and make him/her experienced as well as level them up. Is it worth it 

in my opinion yes it is

how do you do set up a 'B' team

You make a second account.

You need another email address & then you can create another account