They were responsible for taking care of the frames of the tent. They took care of its crossbars, posts and bases. They took care of all its supplies. In fact, they had to take care of everything connected with the use of all those things.
He makes the whole body grow and build itself up in love. Under the control of Christ, each part of the body does its work. It supports the other parts. In that way, the body is joined and held together.
They aren’t connected anymore to the head, who is Christ. But the whole body grows from the head. The muscles and tendons hold the body together. And God causes it to grow.