Alerting and delay outside office hours

Hi All,

How do I set up alerting so that it will send alerts immediately between
07:00 and 22:00, but with a 15 minute delay (if the test still turns red)
outside those hours.

With BigSister I'm used to set up alerting in one file. But am I right that
with Hobbit you might have to setup a few things in hobbit-alerts.cfg and in
bb-hosts?

Thanks!

Dennis