A team leader should be appointed whenever there are multiple people doing the same task.
The most efficient way to manage multiple team members is through a team leader. When many team members do similar tasks and the work of each individual complements the other, the team requires a leader. The team leader acts as the driving force behind the team. The leader is responsible to gather a report from each team member and give the team report to the manager. Thus, the manager only has to manage the team leader in order to manage the entire team. This frees up the manager's time and enables the team to have their own objectives and key results in addition to the individual objectives and key results of each member.