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The schedules listed, are schedules that just happen to be in your model. Those schedules in particular have temperature values. You want to make a new fractional schedule (values between 0 and 1, with 0 being opaque, and 1 being transparent). You can name it anything you like.
The green button at the bottom left of the Schedules Tab view will make a new schedule. http://nrel.github.io/OpenStudio-user-documentation/tutorials/creating_your_model/#schedules