While inviting people to a project, project members can specify a role for invitees. Invitees can be assigned the same or lower role as the project member.
Example: A project member who is an editor can invite users as editors or viewers.
If you get a message that an invitation failed, check with your Project Administrator or Hub Administrator. Membership to projects are governed by hub and project settings and may be subject to Project Administrator and Hub Administrator approvals. For more information on this, see related topics below.