Here is an example of how to create a custom label to use for i.e. HTML footers or overwriting the standard ADvendio discount labels. You find the list of labels in your quote or invoice preference documentation.
Navigate to the Setup → User Interface → Custom Labels. Click on "New Custom Label":
Enter the Short Description, Name, and Value. The Category is optional. The name is the API Name you need to enter in thr quote or invoice preference.
Optionally you can also add translations for any needed languages.
