How to upload electronic files of electronic patent application and fee reduction?

Hello, the homepage of the electronic application network has an introduction and video on how to operate the CPC client. The specific steps are as follows: open the client-click on voluntary submission-click on New, enter the application type, application number or patent number (without decimal point) and invention name-select the application to be submitted, click on Add-select the fee waiver request to fill in-click on Save after filling in-find the file in the middle of the draft box, click on Signature-find the file to be sent in the middle file, and click on Send-wait for all three progress bars to be completed and receive the electronic receipt.