Payers can manage their recurring plans within the Payer Portal. To allow them to cancel their own recurring plans in the Payer Portal:
1) Click on the Account drop down button in your account's main navigation
2) Click on the Payer Portal option
3) Scroll to the “Allow payer to” section and click Yes in the “Cancel Plan” section
4) Click Save
5) Now, when your payers go to their Payer Portal, they will be able to cancel their recurring plan.