According to Faux News she left her house around noon and went to a mockup of the debate venue to practice.
Heard this about 4:30pm eastern time.
practicing where to stand in camera view so she can claim Trump was stalking her?
She is not practicing anything. She is drying our from the medication to allow it to be effective for the full 90 minutes. With the earpiece, teleprompter and previous possession of the questions she only needs run through it all once.