(a) Court approval after hearing A settlement or compromise of an entire class action, or of a cause of action in a class action, or as to a party, requires the approval of the court after hearing. (b) Attorney's fees Any agreement, express or implied, that has been entered into with respect to the payment of attorney's fees or the submission of an application for the approval of attorney's fees must be set forth in full in any application for approval of the dismissal or settlement of an action