Documents
Store contracts, IDs and whatever else each record needs.
Needs Team
Every person has their own document folder: contract, ID, proof of address, certificates. They live in their record, not in a shared drive where nobody can find anything.
Uploading a document
Open the person and go to Documents.
Give it a Label that says what it is — "Contract", "ID", "Food handling certificate".
Pick the file and wait for it to upload.