Select the checkbox for Filed by Representative on the Transmission Information tab.
Enter your seven-character representative ID in the Representative ID field. If you don't have a Representative ID, follow these instructions from the CRA to get one.
NOTE:
Make sure this number matches the number you're using to connect to the CRA website.
Leave the Representative BN field blank.
Make sure the Transmitter Name doesn't have any ampersands in it. If it does, replace '&' with 'and'.