 Originally they were designated by bishops who wanted to separate their spiritual affairs from pecuniary ones but, in the centuries, people from the local administrations entered the deputations.In the past was very important to have control of a fabrica, because they managed the commerce of cereals and had possession of several palaces, it was like being a second Lord of the city.Nowadays fabricas are only intended to keep their buildings with restoration works, maintenance, surveillance and letting conduct daily religious services without interfering.