Increase when idleInterval alerts

If you don't want to change the event timing itself, you can add a blank line to the Escalation chain... it will use the escalation interval on that blank step which will add time.  We use this for Services restarting that take a long time.  We need to know that they've restarted, but also need to know if they don't finish restarting.  So we have an escalation chain just for the service alerts that alert our team, then waits 20 more minutes before alerting us again.  If you add a blank to the end of the escalation chain, you can stop repeated messaging as well.  Works especially well if you are using a ticketing system that only accepts email as an incoming connector.