Representative's Submission Letter?

[riasat.abir]

What is Representative's Submission Letter?
I want to apply TRV on behalf of my parents. I have opened an account.
In the documents checklist it says about this Representative's Submission Letter.
What should be written in this letter? (This is not invitation letter nor representative form).
Or should I select no when it asks "have your representative provided you a letter"?

 

[Bryanna]

You must fill/submit only the 'Use of a Representative' (IMM 5476 form)

 

[riasat.abir]

You must fill/submit only the 'Use of a Representative' (IMM 5476 form)

There is another upload section for that form 5476.

 

[Nabia451]

hello @riasat.abir what did you do eventually, I am in the same boat!