Steven doesn't like to take charge of the group, but he enjoys contributing his ideas. Is Steven being a good team member

The answer is correct.

While Steven is not the leader of the group, either because he does not enjoy being a team leader, or because he does not feel prepared to do so, he is still a good team member, since he contributes to the team by sharing his ideas. He helps the team achieve its goals in this way.

i am a priest who cares deeply about the church. i have been called here to explain my views on indulgences and other proposed reforms. i would like to explain why my views are consistent with the bible and are correct.

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.