The duties for a general manager of administration may vary slightly from one business to another, but they can be grouped into general categories. For example, he must communicate the wishes of his superiors -- specifically you -- to administrative employees, so that your business functions according to your wishes. Decision-making is another important duty, because the manager has to analyze situations and determine the best course of action. Anyone who has worked under a general manager -- administrative or otherwise -- also understands that discipline and coaching are also essential duties. This is to ensure that your business keeps competent employees, helps employees improve, or eliminates those who do not meet the organization's standards. The manager also will understand recruitment and selection, giving him the skills to judge potential candidates for hiring.