If you've just created a package and you want to test it before putting it live on your store, or you want to give a customer a package for free, you can do just that by creating a manual payment. To create a manual payment:
Go to Payments.
Click Create A Manual Payment.
Enter the username of the customer you want to give to package to.
Enter an optional price (This won't affect your statistics and won't charge the customer).
Enter an optional note of why you are creating this manual payment.
Select the packages you want to include in this payment and give to the customer.
The customer will now receive these packages within the next few minutes in game.
This video will explain further about working with payments on your store, including manual payments and how to create them.