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1. Click on People in the left navigation of your Canvas course.
2. Click the +People button.
3. Step 1 - Click the Login ID radio button. Step 2 - Type the portal username of the person. Do not use their full email address.
4. Step 1 - Select the Role drop-down menu. Step 2 - Select the TA/Designer role. Do not choose Designer and do not choose TA - those roles do not have enough permissions for someone to continue teaching your course. Step 3 - Click the Next button.
5. Click the Add Users button.
6. Success. It is okay that it says "pending" next to their name. That person will now need to accept the invitation, but they will have access to your course now and be your backup.