Co-Merchandising

To sell products and merchandise in a single place with other merchants.

To share a place to sell products and merchandise with other merchants.

A term used for persons who share a space to sell products or merchandise (like co-working).

Short form = Co-Merching or Co-Merch

I will co-merchandise my products at the new shop Make 'Ur Merch.
I will co-merch my products in the new shop on the corner.
Antinette is co-merching her products at the new co-merchandising shop.