We have the perfect feature for what you need – it is called Custom Notification Sets. In items with dates (for example tasks, trips, events, etc.) – if you go to the detail view and tap on the Calendar and Notifications tile, you can both create custom notification sets, and add them to the item. An example of a custom notification set could be “Client Meeting Notifications” – where you set a notification a day before, 2 hours before and 30 minutes before. Then anytime you add an item of that nature, you can in a single step add that set of notifications to it from that tile in its detail view.