You can update your payment frequency by following the link here. This link will take you to the customer portal where you can update your payment frequency. If you do not have an account yet, you will need to create one and it will pull your existing customer information.
Please Note: We are reevaluating the design of the web page listed above. Currently, appears as if you are signing up for another account, but worry not! It will connect directly to your existing account once the fields are properly filled.