You can add as many admins as you'd like to your account. Users must first register with Projecturf to be added as an admin. To do this, start by adding their email address to My Contacts. Then associate them with any project and they will receive an email to register their account. Once they have signed up, go to Account - Admins and add them as either a System Admin (has access to everything on the account including billing info.) or a Project Admin (can create and manage projects and has access to the address book).