In an action prosecuted or defended by an executor, administrator, trustee of express trust, or a person expressly authorized by statute, costs may be recovered as in an action by and against a person prosecuting and defending in his or her own right; but such costs shall, by the judgment, be made chargeable only upon the estate, fund, or party represented, unless the court shall direct the same to be paid by the plaintiff or defendant, personally, for mismanagement or bad faith in the action or defense.
NRS 18.090