Scenario:
Some time off types need a document proof to be submitted for approval. The system currently does not support document uploads for time off, like what Expense receipts do.
 
Resolution:
Solution would be to create a User Defined Field in the time off type page to capture the file name of the scanned document which will be available in a shared folder in the company network. The approver can then open the shared folder, check the file name and approve it.