To add an Institution attended by a Tutor, go to People > Tutors > select the Tutor and click Edit next to the 'Institutions Attended' panel. From there, you can search for the Institution relevant to the Tutor.

Adding an Institution to a Tutor's profile.

If the Institution your Tutor attended is not a selectable option, you can add a custom Institution. Go to People > Tutors > select the Tutor, click Edit next to the 'Institutions Attended' panel, and then click the Add Custom Institution button as shown above. You will be asked for the Institution's name and its type.