Board of Allegheny County. Complete and return to: ATTACH A VOIDED CHECK FOR.NOTE: First time set up or if you make changes, the verification process may take one payroll cycle to verify the account number and bank routing information. Please fill in the requested information below. •. A new enrollment form is required for all bank account changes. Checking Account: Attach a voided check. Savings Account: Attach documentation from financial institution or savings deposit slip. Allegheny County Work Location. Phone. Note: A voided check should be attached to this form. This will replace current set-up.