earlier on 28 may , the major parties agreed Agree_or_refuse_to_act on the creation Creating of the position of president , while the prime minister was to hold Hold executive powers ; however , they reached Achieve no agreement Resolve_problem on exactly what powers the president should have or who should become Becoming president , and these deliberations led to Causation a delay Change_event_time in the opening Process_start of the constituent assembly Come_together .