Mont. Code Ann. § 25-31-709

No adjournment may be granted upon the application of either party for a period longer than 10 days unless the opposite party consents or the party applying files an undertaking, in an amount fixed by the justice, with two sureties to be approved by the justice, to the effect that they will pay to the opposite party the amount of any judgment which may be recovered against the party applying, not exceeding the sum specified in the undertaking.