There are two ways documents can be submitted for a process approval process from the My Drive menu.
On the My Drive menu, select the document(s) that you want to submit from your files and click the Process button that appears at the top right.
You can process up to 10 documents at once from the My Drive menu.
On the My Drive menu, select a file you would like to initiate a process for. In the popup window, click the process. Add reviewers and complete process preference settings and click the green Process button.