Reimburse Test Payment

So I am fairly new at bookkeeping and would like some clarification as to how I need to enter a transaction.

My client's debit machine was having some issues and so an employee made a test payment of $2.00 to the business with the machine. I will be reimbursing the employee for this payment but I do not know how to enter these transactions in Quickbooks to balance the month's entries.

1. How do I receive the payment? Would I make an invoice to the employee and provide a description explaining the deposit and then mark it paid? If not, what do I do in place of that?

2. How do I enter the offsetting transaction to enter the $2 repayment to the employee?

FYI, this is for Quickbooks Desktop.

Thanks for your help.