How to display the directory display in Bitrix?

Question

1C-Bitrix

Guys, tell me, please, how to display sections of the catalog along with its elements.
Something like this:
Section 1{Element1, Element2, Element3}, then on the same page below Section 2{Element1, Element2, Element3}, etc.
This is implemented on the site: soberizavod.ru

Answer 1

Correct output template.
You can do it in rusult_modifier.php. Iterate through all the goods, package them in an array with sections.
In the template, it’s easy to already make a forech of sections, and in it a forech of goods