How to pick up. An Walmart to Walmart

I never picked one of those up before

There is a greeter with a computer at grocery end of the store

What type of pick up?

You need the numbers like a money gram but when you get to the register there is a form you fill out that says wal Mart to wal Mart money transfer. Fill out the form and give it to the cashier. The cashier will also be able to assist you.