In a chapter 7 case, dividends to creditors shall be paid as promptly as practicable. Dividend checks shall be made payable to and mailed to each creditor whose claim has been allowed, unless a power of attorney authorizing another entity to receive dividends has been executed and filed in accordance with Rule 9010. In that event, dividend checks shall be made payable to the creditor and to the other entity and shall be mailed to the other entity.