Documentation completely missing?

Where is the documentation and process to Set table relations and Link related information across tables?

Hi there, and welcome! You can find out how to do that here: Airtable – Softr Help Docs

That is not the feature I am referring to. I am looking for docs on this:

Is this settings panel intended to support ‘synced tables’ for PostgreSQL
:eyes:

Possibly, but I think the main use case is any datasources that have relationships between tables.

As far as I can tell, you must create a data source for lists, tables, etc. But what is not clear is how you do joins, or lookups from Softr when it is to a table with a foreign key.