Event Trigger time in Correlation rule
Unfortunately within correlation rules you don't have great functionality over time ranges. You will have to run scheduled jobs to start the view at 10:00 and stop the view at 16:00.
I have attached two .bat files which can start and stop your view by editing one line in the code. Set these up as scheduled tasks and change INSERT VIEW NAME HERE to your view name, i.e. - Failed Login
Hope this helps,