Likert have given the idea of linking pin model for connecting various parts of the organisation.
The model is based on two basic characteristics of the organisation. First, organisation can be seen as system of interlocking groups; and second, the interlocking groups are connected by individuals who occupy the key positions of dual membership serving as linking pin between groups. Thus every individual functions as a linking pin for the organisation units above and below him. He is the group leader of the lower unit and a group member of the upper unit. In the linking pin structure a group-to-group, as opposed to traditional man-to-man, relationship exists.