sessions  for  such  contingencies  should  be  con- ducted  during  slack  hours. In the event of power failure or if the backup in  electronic  cash  register  systems  fails,  make every  effort  to  process  patrons  who  are  in  the store. Patrons will be informed that their orders can be processed but that the procedure will take longer  than  usual.  If  patrons  choose  to  leave rather  than  wait  for  check-out,  they  will  be advised  that  commissary  personnel  will  return their  selections  to  stock. Cash Register Operations If your store has more than one register, assign your cash register operators to specific registers. In   other   words,   do   not   allow   your   register operators  to  select  their  own  registers.  When  your store  has  more  than  one  register,  do  not  assign the  same  person  to  the  same  register  on  con- secutive days. As a supervisor, you will be the person to issue keys   to   the   register   operators.   Each   register operator  should  be  issued  a  key  to  the  locking mechanism of the register to which the operator is  assigned.  Register  operators  should  not  be issued  any  keys  that  would  give  them  access  to the  detail  tape  in  the  register  or  the  terminal. Operators should also not be issued keys that read the  register.  In  fact,  register  operators  should never  have  access  to  the  supervisory  key,  the reading  keys,  or  the  readings  themselves. Once an operator is assigned to a register, the operator should make certain that the register is equipped   with   enough   detail   tape   and   throw receipt paper at all times. The operator should also check to see if the ink is producing legible tapes. The  operator  should  give  an  accurate  receipt  to each  patron  who  makes  a  purchase.  it  is  the responsibility  of  the  cash  register  operator  to replace throw receipt paper. It is the responsibility of  the  supervisor  to  replace  detail  tape. There  are  several  precautions  cash  register operators should follow in all cash register trans- actions. So that all transactions can be observed, cash register windows should not be obstructed. Instruct all operators to check the bottom of each patron’s shopping cart to make sure all merchan- dise  has  been  placed  on  the  check-out  counter. When   accepting   payment   from   a   patron,   the operator should not place the cash in the drawer until after change has been made and given to the patron. The operator should then close the cash drawer until the the next transaction begins. Whenever  the  check-out  supervisor  must operate a cash register, the supervisory functions of  that  person  must  be  passed  on  to  the  next higher level of management. The retail manager, for  example,  may  take  over  the  supervisor’s duties, such as reading the supervisor’s register, approving  voids,  and  carrying  out  other  regular supervisory  responsibilities. OVERRINGS  AND  UNDERRINGS.—  An overring or underring is an error that occurs when the wrong price of an item is entered into the cash register.  The  method  of  correcting  these  errors  will vary according to the type of cash register installed in  your  store.  At  commissaries  with  electro- mechanical registers, the operator can correct the error  by  entering  in  the  same  department  and  the difference   between   the   correct   price   and   the amount  that  was  rung  in  error.  Next,  the  operator should advise the patron of the error and should mark the throw receipt to indicate the error. When an item is overrung, the register operator should prepare  an  Overring/Refund  Voucher,  NAVSUP 972, and should fill in the appropriate boxes. The voucher should be signed by the register operator and approved by the supervisor at the time of the overring.  At  stores  with  electronic  registers,  a Credit Record, CS 5, or a supervisory key should be used to control overrings and underrings. On the cash register, the key is usually labeled Error Correct. For all voids of $2 or more, the operator should cite the reason for the action and should get the void approved by the supervisor at the time the  void  is  made. Each  day  you  should  inform  each  register operator the amount that he or she was either over or short. To document these facts, you should use the  Daily  Register  Operator  Record  (CS  1)  to maintain a record of each cash register operator’s performance.  For  stores  with  electromechanical registers, the columns designed for use with elec- tronic registers, such as rings per minute and audit action, should be left blank. As a supervisor, you should  submit  each  cash  register  operator’s  record to  the  commissary  officer  along  with  the  Daily Cash  Report  and  Sales  Distribution  Summary (CS  11)  for  review  and  appropriate  action. At  commissaries  with  electronic  cash  registers, it is also the supervisor’s responsibility to main- tain the  Price  Look-Up  (PLU)  to  track  the  price of high-volume or difficult-to-price items. In the PLU,   the   supervisor   can   find   the   price   of   a designated item. The price entered in the PLU is based  upon  official  price  lists  received  from  the regional office or the approved price provided in 8-22