If you think you need to add a new user, then search by CRSid. Clicking on "add new user" in the search results will bring up the "Add new user" dialogue, prefilled with information available in Lookup.

If you think you need to add a new student, then search by CRSid. Clicking on "add student" in the search results will bring up the "Add new student" dialogue, prefilled with information available in Lookup.