Automatically save attachment

Okay folks here goes.

I am creating a new form inside my database. The people using this form are going to be attaching a file inside of the form itself. Somebody else is going to save this file in a particular location at a certain point in the flow. How can I automate this so that when it gets to that person all they have to do is hit a button and the file gets saved to the location. It would also be nice to have a popup that says the file has been saved.