Here is how to add attendees to an event from a list of emails.
Log in CampusGroups
Manage your group
Go to Events
Click Manage
Click Add Attendees
6. Click Advanced Add or Invite Attendees
7. Click on the hyperlink Or, click here to paste a list of email addresses and paste your list of email addresses
8. Click on Lookup... to see the list of corresponding users
Some users might be new to CampusGrousp and will be marked as "New Contact". Feel free to enter their first and last names directly in the list. Also set their Gender and Account Type if needed.
9. Click on Add attendees
Please contact support@campusgroups.com with any questions.