FacetWP with fields in a Meta Box Group?

I'm currently using Facet widgets in the Beaver Builder page builder but it isn't able to display fields within a Meta Box group.

I'm wondering if anyone has had any experience / success creating Facets for fields in a Meta Box group?

Very happy to use a custom shortcode - just wondering if it's even possible as I haven't tried anything like this before (still very new to both FacetWP and Metabox).

Thanks in advance,

Phill