I'm FSW outland so my process may vary from yours.
I did medical after I got ITA and submitted proof of funds+medicals DURING application.
Quite not sure about PNPs but I've seen many users having Medical requested and documents requested and submitted on their signature so my first hunch is that you will be asked for documents.
But if I were you, I wouldn't wait and risk my application get rejected due to incomplete documents. Best way is to write them and provide additional documents you feel are missing with letter of explanation.
If I were you I would write them an email (start with webmaster) and ask them for a email address for this specific purpose or submit a Case Specific Enquiry (URL without spaces: h t t p s : / / secure.cic.gc.ca/enquiries-renseignements/canada-case-cas-eng. aspx).
Regarding Proof of Funds: CIC website states:
"
If you are applying for permanent residence in Canada, you must provide an official letter issued by your financial institution indicating your financial profile. This must:
- list of all your bank (chequing and savings) and investment accounts, the account numbers, dates each account was opened and the balance of each account over the past six months,
- list all outstanding debts, such as credit cards and loans,
- be printed on the letterhead of the financial institution, and include your name and the contact information of the financial institution (address, telephone number and e-mail address).
"
So, get a letter from bank as described.
Hope this helps!