Lor San Tekka's associate, a male human named Savi, operated Savi's Workshop. This establishment, disguised as a salvage shop to conceal its true purpose from the First Order, was where the Gatherers assisted Force-sensitives in the building of their own lightsaber weapons.
As one of the merchants featured in Star Wars: Galaxy's Edge, Savi allows visitors to the park to construct their own lightsabers.