Open Riley’s accepted referral and choose Documents. This upload attaches a file to the existing journey; it does not create an Inbox submission. Choose Upload, then select Referral as the document type. This journey has one receiving leg, so there is no additional leg selector. Browse for the same fictional referral letter used in the Inbox review. Check its filename and document type before uploading. Choose Upload and wait for the new Documents row. The saved attachment belongs to Riley’s existing receiving leg. Open the row to preview the actual two-page PDF. Review the letter and patient details before using it. Choose Download to keep a copy of the saved attachment. Close the preview to return to the Documents list.