So no, it does not do what Media Center did. Sorry.
That's okay. It is just that we get a lot of ex-Windows Media Center users who turn up and complain that MC doesn't use exactly the same keyboard shortcuts, remote buttons, and mouse controls, or doesn't do this or doesn't do that, or just isn't the same as WMC. It is a different program, so naturally it is going to be different.
So, JRiver MC doesn't include built in OTA EPG data collection for Australia, yet (it does for ATSC in the USA). But if you are using MediaPortal and Kodi, then you should be able to set up EPG Collector, and import the XMLTV file it creates into MC. It is free, has had significant improvements recently, and the support is excellent. The data isn't perfect, since it is provided by the broadcasters who don't want to share data, but with the included metadata lookup function it can be pretty good. I would say it is the easiest way to collect EPG data for free in Australia. I'm pretty sure some users of MediaPortal and Kodi in Australia and elsewhere use EPG Collector.
Astromo linked to my thread on EPG in Australia. In that thread is a link to a basic outline of setting up EPG Collector. One day one of us may write a better one, but until then, have a go, search around here, or ask questions.
Yes, you can click on things to change channel and record a program. But you may have a bit of a learning curve to set up and use MC the way you want. Over to you.