My client has multiple options for durations for the same thing. I.E. he has 6 batting cages and coaches can reserve them for 30,60,90 minute intervals. The owner would like to be able to reserve a "block" of time i.e be able to choose from 30,60,90 minutes in a dropdown. I don't want to add multiple "services" for the same cage as this wouldn't block out the cage correctly.