pf2e.fyi
From Pathfinder #146: Cult of Cinders, which isn't enabled.

Build Workshop (Crafting)

ACTION

Requirements Crafting (master), Specialty Crafting (any), or any hired specialist; organized specialists

Pick a room in Citadel Altaerein to serve as a crafting area for a specific Crafting skill chosen from one of the crafting specialties listed under the Specialty Crafting feat. You can have multiple workshops, each devoted to its own skill. Use of a workshop grants a +1 circumstance bonus to Crafting checks, or a +3 circumstance bonus to Crafting skill checks associated with that workshop's specialty. This upgrade takes 20 days of work to complete and a DC 25 Crafting check.

Pathfinder #146: Cult of CindersOGL