p. 196 Note on the Emperors Edict to the Synod.
Neither of the Emperors could personally attend the Council of Ephesus and accordingly Theodosius II. appointed the Count Candidian, Captain of the imperial bodyguard, the protector of the council, to sit in the room of the Emperors. In making this appointment he addressed an edict to the synod which will be found in the Concilia and of which Hefele gives the following synopsis.
Candidian is to take no immediate part in the discussions on contested points of faith, for it is not becoming that one who does not belong to the number of the bishops should mix himself up in the examination and decision of theological controversies. On the contrary, Candidian was to remove from the city the monks and laymen who had come or should afterwards come to Ephesus out of curiosity, so that disorder and confusion should not be caused by those who were in no way needed for the examination of the sacred doctrines. He was, besides, to watch lest the discussions among the members of the Synod themselves should degenerate into violent disputes and hinder the more exact investigation of truth; and, on the contrary, see that every statement should be heard with attention, and that every one put forward in view, or his objections, without let or hindrance, so that at last an unanimous decision might be arrived at in peace by the holy Synod. But above all, Candidian was to take care that no member of the Synod should attempt, before the close of the transactions, to go home, or to the court, or elsewhere. Moreover, he was not to allow that any other matter of controversy should be taken into consideration before the settlement of the principal point of doctrine before the Council.