Hi,
You would need to write a custom module, but an example of live to VOD switching , client stays connected and watching, can be found here
https://www.wowza.com/docs/how-to-switch-streams-using-stream-class-streams
or potentially
https://www.wowza.com/docs/how-to-schedule-streaming-with-wowza-streaming-engine-streampublisher
which allows you to schedule when a show is and switch to that stream. If you read the posts on the article above it should outline how to do it.
It can also be done in other ways.
You may need the Wowza IDE , which can be found at the developer section
http://www.wowza.com/media-server/developers
to customise to your environment/requirements.
I appreciate coding is not for everyone so if you do need further help you can get a list of consultants by emailing
support@wowza.com
Shamrock