Overrings  should  be  reported  to  and approved  by  the  check-out  branch  supervisor  at the time of occurrence. Delays are not authorized. Refunds   and   returns   should   be   made in the prescribed manner by the check-out branch supervisor  only.  Note  that  even  dollar  amount shortages  or  overages  should  be  given  special attention.  Constant  small  overages  in  cash  may indicate  underringing  and  the  removal  of  even dollar  amounts  from  the  cash  drawer.  A  dishonest employee engaged in this practice will sometimes leave  the  small  change  in  order  not  to  be  found short in the belief that management will not pay as  much  attention  to  an  overage  as  a  shortage. Cash  register  operators  should  not  be permitted   to   make   sales   to   members   of   their immediate   family. At   stores   with   electronic   registers,   the error-correct and void keys must be used to cor- rect errors. The error-correct key should be used immediately following an erroneous entry (under- ring  or  overring)  since  the  register  is  programmed to void the last entry when the error-correct key is  used.  The  register  operator  may  then  reenter the item, ringing the correct price and department. A  Credit  Record  (CS  5)  should  be  inserted  into the  register  to  record  the  error-corrects  or  voids to permit an audit trail of total register operator voids  for  the  sales  audit  function.  On  Bunker- Ramo electronic registers, voids and error correc- tions are controlled by the setting of a threshold amount at which an error can be corrected by use of the void key. This feature, which would require the  supervisor  to  perform  remedial  action  when the threshold is exceeded, should be used. When an overcharge is discovered after the entire order has been totaled, corrective action will be effected by means of an Overring/Refund Voucher (NAV- SUP  972)  as  described  earlier  and  entered  into  the register as a void. Where an entire order must be voided out, prescribed void procedures should be used.   Care   should   be   taken   so   that   voided amounts are properly credited to the appropriate departments. All voids of $2 or more will require the  approval  of  the  supervisor  at  the  time  of occurrence. Sales  to  commissary  personnel  should  be restricted to those employees who are authorized patrons  or  their  agents.  Specific  check-outs  should be  designated  for  these  transactions.  For  these purposes,  an  employee  is  defined  as  one  who  is employed  at  any  location  within  the  region.  For example,  an  employee  assigned  to  the  regional office  who  is  also  an  authorized  patron  will  be considered to be an employee of any commissary in that region when the employee desires to make purchases.  Such  sales  will  be  witnessed  by  the check-out supervisor or an individual at a higher supervisory level. Individuals are prohibited from weighing, establishing the selling price, checking out,  or  witnessing  their  own  purchases  or  those of   their   agent’s   sponsor   or   relative.   Those employees who are authorized patrons or agents will not be required to complete any form or log that  is  not  required  of  other  patrons. Commissaries  equipped  with  electronic registers  should  use  the  Price  Look-Up  (PLU) capability for pricing high-volume or difficult-to- price resale items. All S-4 items should be assigned PLU  numbers.  No  more  than  50  grocery  (S-1) items  should  be  included  in  the  PLU.  The  PLU feature  can  be  used  to  track  the  movement  of items   that,   because   of   either   their   high   sus- ceptibility to pilferage or their potential for short delivery,  contribute  to  inventory  losses. The supervisor can also use the PLU to initiate any disciplinary action that may be warranted as the result of a review of the previous day’s sales audit or recent trends. At commissaries with elec- tronic  cash  registers,  it  is  also  the  supervisor’s responsibility   to   maintain   the   Price   Look-Up (PLU)  file  for  all  such  designated  items,  based upon official price lists received from the regional office  or  approved  prices  provided  in  writing  by the  department  manager  and  approved  by  the commissary  officer.  Whenever  a  change  is  made to  the  PLU  based  upon  information  provided  by commissary department managers, a file of such authorized  changes  must  be  maintained  for  a period   of   18   months.   PLU   tapes   should   be attached   to   the   CS   11   and   submitted   to   the regional office. There are several means by which the PLU is used to the commissary’s advantage. They  are  covered  in  NAVRESSOINST  4065.34. This  instruction  should  be  thoroughly  read  and understood  by  the  front  end  supervisor. TOTALS,   KEYS,   READINGS,   AND JOURNAL   DETAIL   TAPES.—   Group   totals must   never   be   altered,   turned   back,   or   reset without   permission   from   NAVRESSO.   This   is because   group   totals   must   always   indicate   a cumulative amount whenever these totals are read. Any  group  total  reset  keys,  duplicate  cash  register 8-25