The definition of a co chair is a person who is jointly in charge of something, such as planning an event, with another person. An example of a co chair is a person who, along with his sibling, plans and holds a fund raiser. Becoming a session co-chair is a great way to get involved with conference programming that interests you as well as become acquainted with Divisions or Forums in your field of interest. As chair you have agreed to take on an important role which will prove critical to the smooth operation and ultimately the success of the conference.
The chairman is the highest officer of an organized group such as a board, a committee, or a deliberative assembly. The person holding the office is typically elected or appointed by the members of the group. The chair presides over meetings of the assembled group and conducts its business in an orderly fashion. Across the world, many companies have separated the roles of chairman and CEO, often resulting in a non-executive chairman, saying that this move improves corporate governance. But a dysfunctional cochair relationship can easily degrade into a frustrating tangle of miscommunication, duplicated efforts, and dropped balls. Otherwise, you’d have a single committee chairperson and an assistant. In the event that a Chair is unable to act as an AC representative in presentations, meetings or other forums, the Co-chairs may be asked to fulfill that role;
Make sure everyone on the committee is familiar with the roles of Chair or Co-Chair, cognate, and the other members. How closely and frequently members other than the Chair(s) engage with the student’s work varies, all should be in regular contact.