Desktop.com defines four different user groups:
The user who created a Free or Pro/Enterprise account
The user with the rights to manage users, groups, and desktops within the Free or Pro/Enterprise account
Members of the Free or Pro/Enterprise Account, that are invited by the owner or administrator to be part of the account
A guest user can be invited to a Pro/Enterprise account. Guest users can be invited to a desktop created by a member of the Pro account (owner, admin, member) or the owner of the Business account. A guest can be part of one or more desktops within an account they are invited to.