A: If you are the master user on your account you can add users via My Account > User Administration > Add New User
Hint: for each new user you add on you will be charged the additional user licence fee for the level of your account e.g. Sales, Marketing, Complete. However if you are a Complete user and you wanted our mix & match deal of adding Sales users on then get in touch with us (Support Ticket or call us on 0333 200 7273) and we will be happy to talk this through with you.