How to modify component.php?

Question

1C-Bitrix

Hello everyone, please tell me how to add a condition to the subscription form handler, which is located in component.php?

Answer 1

Copy the component to your namespace and boldly change everything you need
. The training courses have how to do it here

Answer 2

Copy the original component to the new one and modify as needed. Or / better if you can only customize templates so that there is less copy-paste