Sections/Segregated Knowledge Bases

This is similar to the request here: Multiple Knowledge Bases under one account, but not exactly the same. I would prefer both options, entirely independent Knowledge Bases (separate domains, audiences, businesses) managed from a single account/dashboard AND separate sections within a single Knowledge Base (separate departments, teams, topics, locations) within a single business/brand.

Archbee/Docusaurus have a clean and simple approach to segregated sections and it is brilliant. You can see the independent KBs as tabs at the top on these live sites:
Ionic

Astronomer Docs