From the Roster menu option on your organization’s page:

1. Click the “Invite People” link in the tab on the left side of the page.

2. Enter the campus e-mail addresses you'd like to send membership invitations to.

3. As you select people and add e-mail addresses, they will be moved below the tabbed module to the complete list of people to be sent invitations.

4. Select "Member" from the drop down menu.

5. Click “Send Invitations” when all people have been added to this list.