This page has a variety of information relevant to exercising the gift of godly, God-sanctioned, effective leadership.
"God appointed that His people should be bound together in the bonds of sacred union. But a man-ruling power came gradually into our ranks. Men were appointed to be rulers over their fellow men—men whose ways were not the ways of the Lord and whose works were not His works. God has never decreed that man should thus be made amenable to his fellow man, or that one brother should dictate to another concerning individual duty. He has never bidden any man accept the words and experience of a fellow worker and to follow the judgment of a man-ruling power."—Ellen G. White, Letter 54, 1908, par. 10
"There are many who suppose it to be their privilege to control to some degree the actions of their fellow workers. They think that other workers, whom the Lord is using, should first obtain their consent before doing a certain work, and that they should work according to their direction. All such yokes are to be broken. The work is to go forward under the Lord’s direction. His servants are to work at His dictation."—Ellen White, Letter 416, 1907, par. 2.