when I try to create a workout for cardio the only options I get on exercise type are weight lifting. I tried to just do a custom workout with intervals but then I couldn't find the workout in the watch. Any suggestions?

I am having a hard time creating workouts.  I want to create some interval cardio workouts but when I select cardio as the activity the drop down options for exercise type are for weight lifting.    When I select custom, I can create the workout but then I cannot find it in my watch anywhere.    Help...