First, make sure that you have discussed expectations with your librarian and have published your Canvas course.
Click on People in the course navigation links.

Click on the red +People button.

Search for the appropriate librarian by email or by login ID (the part of the email before the @).
Choose "Librarian" from the Role menu.
Click Next.

After Canvas successfully finds the librarian, click Add Users.

The Librarian will be listed as "Pending" until they accept your course invitation.
