Can you expand on this request? Is this for Tableau Desktop, Server, or Online? What versions of Tableau are in use?
What sort of data refresh?
And please let us know the details? It sounds sort of like a request to stop a running extract under a specific circumstance but I'm unsure here.
When you choose 15 mins, you can change the options below to run between 7am and 12:30am (as per your screenshot)