In your PR application, you would see tick marks as you complete different sections. When you complete all the sections, a "Continue" button will appear below all the sections.
After clicking that, you'll see your personalized checklist.
From memory, this is usually the list:
- PCC
- Proof of funds
- Scan of non-blank passport pages
- Digital photos
- Proof of Medical tests
- Scan of marriage certificate (if applicable)
- Scan of ECA and degrees
- Work experience proofs
- (optional) letter of explanation / cover letter
Good luck!