• Place market stall blocks in a Marketplace area. Free hirelings (unassigned: all day until 13500; others: the evening 10000 to 13500 unless their job works evenings or nights; and any worker idle at their job for 15 seconds, who checks work again after 2 minutes) take the nearest free stall within 128 blocks. Merchants keep a stall all day, take the biggest (bumping non-Merchants), and sell crew surplus (anything over a full stack, not what a job needs) from storage every 30 seconds.
• A stall sells the hireling's own goods (from the mod's trade list, by every job they have worked and their level; 2 slots for a Novice, 3 Apprentice, 4 Journeyman, 5 Master, 6 a Master with CHA above 0; stock made fresh each morning; a job's goods fade 15 / 35 / 60 days after last worked, twice as long for Masters), plus 3 lots of a quarter stack each from the crew's storage. Owners of the same company see 3 lots of random vanilla items (4 of each a day) instead of the storage lots. CHA takes 2% off per point; an unhappy crew (morale and loyalty average under 50) charges up to 25% more.
• Each sale: 10% to the selling hireling's account, the rest to their company.
• Crew supplies: with a daily budget, every 20 seconds the company buys what a job has been missing for 15 seconds: the cheapest lot on another company's stall, else the town store at list price +25% (up to a stack).

The ten stall designs are on Market Stalls.

Picture to add: a Marketplace with hirelings at their stalls