How do I put .HTML pages into cache, via RULES?

Hello

How do I put .HTML pages into cache, via RULES ?
Is it possible if those pages are generated via PHP ? I do use PRESTASHOP CMS
What do I need to select in RULES PAGE to make it work

Thanks again

Welcome to Cloudflare and the Community!

You can do this with Cache Rules

Specifically with Cache Eligibility

You can target narrowly or broadly with these rules too, which can be quite useful.