All this comes from 25 years of work in office environments:

The actual - rather than ideal -structure of a six- person team goes like this:

1 person doing absoutely nothing.

2 people doing only what they are directly asked to do, when they are asked to do it.

1 person throwing their weight about, dominating every meeting, who insists on calling problems 'concerns' or 'challenges' and uses phrases like 'going forward' and 'strategic'.

1 person who reiterates everything the previous person says and takes copious notes.

1 person doing all the work that the loud-mouth will take credit for.

The collective IQ of any group is equal to the lowest IQ in the group divided by the number of people in the group.

The success of any project is inversely proportional to the number of people involved.

The efficiency of any team is inversely proportional to the number of meetings they have.

One competent person, working by themselves, uninterrupted and not micro-managed, can do as much in a week as a fully-organised and integrated team can manage in a month.

Teach the kids to work on their own, at their own level and make sure they learn from their mistakes.

One word from my military days:

A team only works when there is a clear chain of command with one person giving the orders, another to make sure orders are carried out and the rest doing what they're told!