Originally, the term "president" was used to designate someone who presided over a meeting, and was used in the same way that "foreman" or "overseer" is used now (the term is still used in that sense today). It has now also come to mean "chief officer" in terms of administrative or executive duties.
While presiding, the president should remain impartial and not interrupt a speaker if the speaker has the floor and is following the rules of the group. In committees or small boards, the president votes along with the other members. However, in assemblies or larger boards, the president should vote only when it can affect the result. At a meeting, the president only has one vote (i.e. the president cannot vote twice and cannot override the decision of the group unless the organization has specifically given the president such authority).
The powers of the president vary widely across organizations. In some organizations the president has the authority to hire staff and make financial decisions, while in others the president only makes recommendations to a board of directors, and still others the president has no executive powers and is mainly a spokesman for the organization. The amount of power given to the president depends on the type of organization, its structure, and the rules it has created for itself.
If the president exceeds the given authority, engages in misconduct, or fails to perform the duties, the president may face disciplinary procedures. Such procedures may include censure, suspension, or removal from office. The rules of the particular organization would provide details on who can perform these disciplinary procedures and the extent that they can be done. Usually, whoever appointed or elected the president has the power to discipline this officer.