SharePoint Query Rules for subsite filtering

Hello Kipetcoff

in your PrintScreens you use two different search technologies, in the first one you use Microsoft Search, in the last one you use SharePoint Search in classic, you must choose a technology. Here are an article about different Search Technologies: https://docs.microsoft.com/en-us/microsoft-365/community/microsoft-365-search-technologies

I prefer Microsoft Search oder SharePoint Search with PnP Modern Search Web Parts.

Where is your property stored? In documents or in property bag from your subsite?

Filter in Microsoft Search

Here is the way, how you can configure Search Filters in Microsoft Search: https://www.mehr365.com/microsoft-search-filter-in-standard-verticals-hinzufuegen/

Filter in SharePoint Search with PnP Modern Search Web Parts

In this article you can find the configuration for your PnP Modern Search Web Parts: https://microsoft-search.github.io/pnp-modern-search/scenarios/page-with-filters/

In this Blog from JoanneCKlein you see a example how you can set and use properties with the property bag: https://joannecklein.com/2021/09/24/adaptive-scope-retention-policy-a-walk-thru/

I know, a lot information but i hope, this helps. Come back to us when you have more questions.

Have a good day and best regards,

Dave