You can set or change your PIN by clicking on the profile icon in the top right of your account dashboard, then on 'Set/Change PIN' and following the instructions.
If you cannot remember your PIN, instructions to reset it can also be found here.
Note: if you enter your PIN incorrectly 3 times at an ATM, your PIN will lock. To unlock your PIN, contact support at support.hmbradley.com. Unlocking your PIN will not change your PIN.