I did my master's and I am applying for TRV for my parents to attend the convocation ceremony. I have an invitation letter from university also. I need help in the following sections:
Purpose of travel: Which Docs, I need to upload here? A detailed letter explaining all the reasons to come to canada and ticket itinerary are enough?
Proof of relationship: My birth certificate and passport are enough for this section?
No - Under invitation letter, you provide a letter from you addressed to the VO.. Saying that it is your convocation, etc etc. and you'd like your parents to attend.. And you will ensure their return after completion of their stay..
Under purpose of visit , you upload the convocation invite, plus as many details of the event as possible.. I'd also suggest to add a few details about tourism/sightseeing - so that the VO doesnt think its odd for an entire family to fly so far out just for a convocation (just a suggestion)