If you have purchased a family account, you can add and manage family members ( sub accounts) by clicking on the account link in your member area and choosing the subscriptions link. or by following this link my account

You can cancel, update , renew or upgrade your membership subscriptions by clicking on the account link at the top of the page in your member area or by following this link my account

You can update all your profile information in the profile link in your member area at the top of the page or by following this link myprofile