Yes you can!
When searching for Employers, Schools, Residences, Affiliations or Interests, if the item you want to add is not found, you will be prompted to add it.
Please note that all user-defined profile items are subject to review. You will receive an email once your item is approved or rejected.
For approved items, they will be displayed on your profile, and included in Value Score calculations, the next time you login to the app.