Hallo Bo Davis,
Usually, a refresh (i.e, every 10 minutes) should keep the session alive depending on your user session timeout.
Have you tried increasing your session timeout to a great number than your refresh timing?
Lénaïc RIÉDINGER, Global Community Engineer Tableau
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Thank you for your response. As I mentioned reloading is easy, but it knocks it out of "full screen mode". Is there a way to refresh and stay in that mode?
Also how do you increase your session timeout? I am using Tableau Online not Tableau Server.