Serve flags appropriate to keep session alive for 60 seconds

Hi. How do I keep a panel session alive in the user browser window for say 1 minute? If I don’t set any flags the session times out and the user is required to refresh the browser. That’s not good behaviour.

I thought the answer was to set

--unused-session-lifetime=60000 

for a 1 minute session but that seems to make the session persist until the user closes the browser window. The panel help command doesn’t show the defaults.

Any advice appreciated