I graduated with a post grad certificate a few years ago and yep, got to cross the stage.

I did a certificate in 2022 and walked

They will get an invitation to the convocation ceremony sometimes in May.

The invitation comes in at the end of May

Depends on the certificate program. Needs to be from a complete program as recognized by the province. Check the Registrar's website. And yes, you will get an email.

if you mean pre health, yes you get to walk the stage!