Missouri Substitution of Counsel is a legal procedure that allows a lawyer to step down from a case and be replaced with another lawyer. This procedure is used when a lawyer is unable to continue representing a particular client, such as due to a conflict of interest, a lack of expertise in the applicable area of law, or personal reasons. There are two types of Missouri Substitution of Counsel: voluntary and involuntary. Voluntary substitution occurs when the withdrawing attorney and the client mutually agree to the change, while involuntary substitution occurs when the court orders a substitution of counsel at the request of one of the parties. In either case, the withdrawing attorney must file a motion with the court, a notice to the client, and a notice to the opposing party. The court must then approve the substitution before it is allowed to take effect.