I'd like to help you with this question, bradfordj! As long as you're able to view Starz movies On-Demand from your receiver, you should be able to view Cinemax, as well.
Hope that helps and let me know if you have any questions!
Oh, Let me clarify... this is Timer Options when you want to edit your DVR schedule through DishOnline and this option only appears if you are recording an entire show's series.
For example: Recording Series:New Episodes -timer options