I want to change my Lawyer

if you had given vakalathnama on his name just appear before the court and state that you had withdrawn the vakalathnama given by you to the lawyer and you are appointing a new lawyer to deal the case on behalf of him.also issue a notice to the previous lawyer that you are not satisfied with his services and so you are appointing a new lawyer on behalf of him.you can change lawyer at any time during the proceedings