When you make a credential request, the Service Provider or Admin Contact Person will receive an email with a link for them to follow in order to upload the required credentials. Clicking on the link will show them a screen that looks like this:
After filling out the required fields and uploading any evidence, they can click Submit at the bottom of the screen:
After the credentials are successfully submitted they will receive a receipt which they can export to a PDF. Then they can simply close the browser window to finish.