Order Number’s Starting Number: Instead of starting from 1, the first order number on your site can be a custom number. For example, if you enter 2507, the first order on your site has the order number 2507, the next one is 2508, then 2509, and so on.
Gift Card Code’s Type: You can use your own codes as gift card codes, or let CM Gift Card generate unique random codes.
Gift Card Code’s Length: The maximum number of characters in a gift card code. This affects both predefined codes and random codes.
Gift Card Code’s Characters: The types of characters allowed in a gift card code. This affects both predefined codes and random codes.
When No Predefined Codes Left To Use: If you use predefined codes and all of them have already been used, CM Gift Card can either switch to random codes or show an error and prevent the customer from checking out.
CM Gift Card Documentation