You spend gold on facilities that serve the guild. Use the Training Ground to support growth and the Infirmary to improve injury recovery and reduce death risk. The Appraisal Office narrows potential estimates.
Open "Facilities" from "Base" to compare each facility’s effect and upgrade cost. The Scouting Corps improves intel and recruit quality, while Lodging helps mercenaries recover from fatigue.
Consider the Infirmary if injuries keep people out of the party, or the Appraisal Office if you need a clearer estimate of a recruit’s potential. Reserve gold for the next payroll before buying an upgrade.