Always Choose Holiday Rule

When you define the ad break (time) model under Scheme plan > Ad break (time) model > Edit you can determine the rules for holidays, too. It makes sense to apply the ad break (time) model as usual for all loaded days at first. Then please select only those events of the holiday in the current plan (by pressing [SHIFT] or by dragging a frame over the respective events). Now you need to apply the ad break (time) model again on to events while activating this flag: For the selected day all ad breaks will be inserted according to the defined holiday rule.