Add tiered pricing!

We are having an event and need pricing for 4 different categories: Adult, Kid 6-16, Kid 0-5 and Guest. We currently have to set up 3 different "events' at the same time to be able to achieve this. 

I'd love to be able register myself, and be able to click options to bring a 5 year old, a 14 year old and a guest, all with one checkout. (Especially since we add links to our digital invites and I have to add three different ones!)

Thank you for your consideration!