# Using Gift Certificates in Checkout
During the checkout process, make sure you have added all items in the cart
Press the +Gift Card button to expand the area that you can enter the code for the Gift Certificate or Card
Press Apply and if the GC is valid it will apply it to the cart
Once the Gift Cert/Certificate has been used during checkout the remaining balance will be used
## Customizing the amount to use from a Gift Certificate
If you do not want to apply the entire amount to the cart, press on the blue text depicting the amount applying to the cart
I.e. If we set the amount to 10 it will use $10 out of the $15 and the remaining $5 can be used at a future checkout
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.simplespa.net/simplespa-documentation/fundamentals/pos/common-checkouts-and-tutorial-walkthroughs/using-gift-certificates-in-checkout.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.