Neb. Sup. Ct. R. 4-210
Visitation or parenting time adjustments or direct cost sharing should be specified in the support order. If child support is not calculated under § 4-212, an adjustment in child support may be made at the discretion of the court when visitation or parenting time substantially exceeds alternating weekends and holidays and 28 days or more in any 90-day period. During visitation or parenting time periods of 28 days or more in any 90-day period, support payments may be reduced by up to 80 percent. The amount of any reduction for extended parenting time shall be specified in the court's order and shall be presumed to apply to the months designated in the order. Any documented substantial and reasonable long-distance transportation costs directly associated with visitation or parenting time may be considered by the court and, if appropriate, allowed as a deviation from the guidelines.
Neb. Sup. Ct. R. 4-210