Doing work in a group also means acknowledging that different people have different ways to react to and express anxiety, stress, fear.
Most groups respond to the attitude of the person in power, and the person in power wants to get out of the unpleasant situation as soon as possible: more control, more direction, more drama. This often means everyone hides and looks for ways to stay afloat.
Successful groups manage to talk. To air their feelings and find a shared way forward. To take the differences and dig value from them. To step into the unknown together, at the same time.