the Kollegialität was a constitutional principle of the Roman republic, according to which each office for municipal authorities had to be occupied cursus honorum with two or more equal colleagues, who possessed mutually the right of the Intercessio (prevention of an arrangement of the colleague).
Even in later conditions this principle found to entrance again and again. In the Republic of San Marino this very day two for a half year selected Capitani Reggenti at the point of the state stand. The division of power functions thereby similarly as with the consuls the Roman republic more than 2000 years ago.
In the early modern times the landesfürstlichen and ständischen authorities - for example fürstliche Kanzleien and chambers , which secret advice and the order committees - were organized after the Kollegialitätsprinzip. That is, decisions were made together by production of consent or by tunings according to the majority principle. Firm one department for the individual members of the Kollegien were not usual and all had equally entrance to the prince. The chairman of an advice was only Primus inter Pares.
The term is used also in the sense by collegial co-operation.