Workshop upgrades are meant to work with the "Guild Artist" profession tree https://skyarch.forumotion.com/t31-professions
Workshops require Craft Staff, https://skyarch.forumotion.com/t91-guide-staff
The base workshop can accommodate normal resource transition, T1->T2->T3->T4. if however you would like to skip a step that is where specialist upgrades come into play.
Workshops require Craft Staff, https://skyarch.forumotion.com/t91-guide-staff
The base workshop can accommodate normal resource transition, T1->T2->T3->T4. if however you would like to skip a step that is where specialist upgrades come into play.