Primary seed geo_ column question

[tnederlof]

Hi there, amazing package, it is really helping me learn some of the concepts involved. The data formats for the primary and secondary seeds/targets make complete sense to me until I try to specify a certain geography (for example "geo_blockgroup"). I specify them as rows in my target tables (primary and secondary) under the column "geo_blockgroup". I would except no need for a "geo_blockgroup" column in my primary seed however because that is the larger region households/population of which is being weighted according to each block group target specified.

I can get it running if I duplicate the seeds so there is a duplicate set for every block group (creating an ID namespace with the blockgroup that its in) but I am not sure this is the best way to proceed. How should I structure my primary seed properly?