Habpanel trigger rule on specific tab/dashboard/page access

hello all,

I recently got my habpanel cameras setup. The help of @matt1 was invaluable as was his binding and widget. What I would like to ask is. I want to only look at the cameras when I pick the cameras habpanel tab or page. so I need to be able to trigger a rule (to switch off the update function) by habpanel page access - basically an active non active page rule.

This rule would turn on and off the screenshot fuction of the widget i use on Habpanel in order to decrease the network traffic and access on my NVR when not needed.

any obvious ideas?