I would like to upload a file and it appear in the role of the members notifications page

I would like to be able to upload a file (contract) for a specific member and it show up only on that members notifications page. I currently have File share app but it creates an entirely new page. I don’t want a new page. I just want that file to go to the designated member to be able to view, download, and upload once the file is complete. Or like docusign allow the member to sign the contract on the website and save. eliminating the use to download and upload. Anyway to do any of my requests?

These files are contracts between the specific member and myself, therefore, I do not want access to any other member, but would like the convenience of it showing up on the members page and not on the general public file share tab.