to discussion in being council of injunction

in nowadays world, social activities and affairs are done in form of group or counsel. can group and council-working experience be performed in ejtehad and issue of religious commandments? what a necessity is there in this work? what are its positive and negative benefits and consequences? of course the first meaning of grouping ejtehad can be that individuals come together to endeavor to seek the solutions of day to day matters. in this ease some work division and research should be conducted among them to assist each other in ejtehad. the second meaning is that they cooperate in issue of fatwa. in this research, my purpose is to show that a number, who have reached to degree to issue fatwa, shall cooperate in pronouncing of fatwa as a group.