In an organization, there are work roles that do emerge in groups. My question is; 1) Which of the work roles is it primarily important to take on a

In an organization, there are work roles that do emerge in groups. My question is;

1) Which of the work roles is it primarily important to take on a team?

2) Are there any circumstances in which the above chosen work role can be changed to take on a different work role?

3) How difficult or easy is to take on a role different from the primary role in (1) above?

4) Explain the difference between a team and a group.