Most lenders do not currently support uploading documents to them directly from ARIVE, so in this case you would need to Download the documents from the Documents tab of the loan file and then manually upload them into the lender's portal.
Some of our integrated lenders (currently Windsor, PowerTPO, and JMAC) do allow you to upload/submit documents to them through ARIVE. To submit documents to these lenders, you must first have registered the loan with the lender in ARIVE, then you can select the documents you wish to upload from the Documents tab of the loan file and click Upload to Lender.