The comitia centuriata elected important magistrates like consuls and praetors. Magistrates could also convene the "comitia", but only with the consent of the tribunes. The consul Quintus Metellus Celer proposed an identical bill to the comitia centuriata. It was Brutus who convened the "comitia" and asked that they revoke the king's imperium. The first was the "comitia" ("committees"), which were assemblies of all optimo jure. The actual voting took place in a "comitia" or "concilium" (for this term, see below). There were three types of gatherings, the "comitia", the "concilium", and the "contio" or "conventio". The "comitia calata" ("calate assemblies") were non-voting assemblies "(comitia)" called for religious purposes. For this purpose, the "comitia" could only meet when summoned by a Magistrate. The Curiate Assembly was a "comitia". Originally it applied to the wards of the "comitia curiata". The president of the Comitia Centuriata was usually a consul. The curiae formed the voting units in the Comitia Curiata. Its decisions had no force unless approved by the "comitia curiata". In the "comitia centuriata" the Romans were divided according to age, wealth and residence.