In Roman Catholicism, a curia consists of a group of officials who assist in the governance of a particular Church. These curias range from the relatively simple diocesan curia, to the larger patriarchal curias, to the Roman Curia, which is the central government of the Catholic Church. Other Roman Catholic bodies, such as religious institutes, may also have curias. For example, the Legion of Mary has a rank called the Curia. It stands above the Praesidium but below the Regia. The Curia is responsible for several Praesidia.