How do I join www.discovermorecorps.com and the private groups?

 
How do I join www.discovermorecorps.com and the private groups?
 

Note that the Discover More Corps is a public site and anyone, anywhere, can join at any time. Access to ProQuest Graduate Education Program (GEP) resources is protected within private, invitation-only groups. After completing the registration form, instructors will receive an invitation to a private group, where they will be able to access the complimentary resources. This group will depend on the instructor's product selections.