I have a master list of tags, with a related table of documents for
each tag.

I have a query that select relevant tags based on 'owners', and would
like a form that present all the relevant tags on the left, and the
relevant documents for the selected tag on the right.

TBL_Tag:
*TAG
Description
Area
misc....

TBL_DocRef:
*DocNo
*GenId

TAG and GenId are the related fields.