The structure of sections and pages based on the infoblock - how to apply the template?

Question

1C-Bitrix

Hello.
I created an infoblock and, based on it, a structure of sections with elements. I figured out their urls and they will be available to me at the url of the form - www.mysite.ru/razdel1/element1
Now I want to apply a separate template to these sections and elements.
How to do it right?
If I had a constant part in the URL for this infoblock - for example - www.mysite.ru/catalog/razdel1/element1 - I would just check the regular part for a match with the constant part of the catalog and that's it.
What would be the best thing to do in my case? Will I be able to check (in the site settings where the template is selected according to the conditions) for the presence of a section in the structure of my infoblock by the razdel identifier or are there better solutions?