How to properly customize the functionality of Bitrix standard components?

Question

1C-Bitrix

For example, there is a user orders component.
And, for example, I needed to add an unload button in Excel to each order, writing its click logic.
Is it possible to infiltrate these components by hacks or extensions? How to solve such problems from the point of view of Bitrix?

Answer 1

From the point of view of Bitrix - climb into the template (template) of the component.
Mixing layout with logic there is considered normal for Bitrix, so don't spoil it...