Bank links
Here are some specific instructions and examples, but even if your bank is not listed here, it should still be easy for you to set up. Your bank will likely have similar instructions online.
Citizens Bank:
https://www.citizensbank.com/mobile-and-online-banking/online-demos.aspx
Santander Bank:
https://www.santanderbank.com/us/get-started/personal/online-billpay
Merrimack County Savings Bank:
https://www.themerrimack.com/personal/online-mobile-telephone-banking/
Bank of NH:
http://banknh.com/online-banking/online-education-center
Bank of America:
https://www.bankofamerica.com/online-banking/mobile-and-online-banking-features/bill-pay/
Sugar River Bank:
https://www.sugarriverbank.com/assets/files/RdiAZfdn/sugarriver_Bill_Pay_Guide.pdf