How to correctly make bitrix:catalog.filter in bitrix:catalog.section?

Question

1C-Bitrix

Hello!
Can you please tell me how to properly configure bitrix:catalog.filter in bitrix:catalog.section so that ajax works?
I inserted the filter call above the catalog.section call, the filter works without problems, it filters, but reloading the page and not ajax, I insert the filter call directly into the catalog.section template, then ajax works, but spoils the layout and does not filter ... What I do is not So? There is nothing special about the filter settings...