Robinson v. McDonald does not explicitly say this, but it appears that the appellate court is giving tacit approval to a trial court entering a child support amount and reserving jurisdiction to change that amount when timesharing reaches 50/50. Apparently there is a 50/50 timesharing schedule with a transitional period that has been ordered, and the Father wants to be able to easily reduce his child support when the goal is achieved. The opinion does not give the facts, but this seems to be a logical assumption.