Step 1: You have to enter that it's a WIC transaction before you ring any items they're paying for with WIC. See step 2 for how to do this. If you've already rung some of the items void out the transaction.
Step 2: To start the transaction, look at the check and see whether it's WIC Produce or WIC Food/Formula. Produce will state a maximum dollar amount (usually $6 IME, may vary by location), Food/Formula will list off acceptable items.
Then go into the Extras function on the home screen of the POS (K7 I believe), and choose which WIC transaction it is.
Step 3: Follow the prompts. It'll usually ask you to enter the begin and end dates listed on the check, and the check #.
Step 4: When you get to an empty ring screen, ring up the items that should be covered by the check. Usually guests using them know to separate them out by check for you
Step 5: Press Total, put your initials in the box where it says cashier initials, put today's date in the date used box (between the start and end date boxes), and have the guest sign the check. It'll prompt you at some point to check the signature against the guest's WIC ID folder and signature.
Step 6: Run the check through the MICR reader/printer on the POS just like any other check. After it prints the amount on the back of the check where it puts the endorsement info, copy that to the front where it says check amount.
Step 7: DO NOT WRITE ANYTHING IN THE BOX THAT SAYS PAY TO THE ORDER OF ON THE FRONT. Cash office has a special stamp for that box and if you write Target in there it makes the stamp hard to read
Step 8: Put the check in the register. I usually put it under the till because they're too big to fit in the usual far left space.
Step 9: Give the guest their receipt.