Your Primary Education is intended to represent the institution you're currently affiliated with. You can add as many institutions to your Handshake profile as needed, but can only have one listed as your Primary Education.
If you need to update your Primary Education on your profile, you'll need to submit a ticket to Handshake's Support Team. This is because the institution will need to approve your affiliation before being added.
To update the Education information on your profile, refer to How to Edit Education Information on Your Profile.
If you'd like to edit your bio/journey on your profile, refer to How to Edit Bio/My Journey on Profile.
To update your personal information on your profile, refer to Update Personal Information on Your Profile.