How do I apply for an exeat?

Apply on the portal; your parent or guardian approves it from an e-mail.

Open Exeat on the portal and apply, with your dates and reason.
Your confirmed parent or guardian gets an e-mail and approves or refuses it from the link.
The hall and the university then decide, and you follow it on your exeat page.

Parents: if you did not get the e-mail, check spam, and make sure you have confirmed your details.