Widget with upcoming and past webinars
If you want to show a list with 'upcoming webinars' or "past webinars" then you can make use of the widget functionality of WP WebinarSystem Pro. You can add both the widgets within the widget menu from your backend.
For example, see this picture:
You can choose how many webinars you would like to show in the widget area on your page. The webinars will be automatic sorted and displayed depending on the status of the webinar. In this example there is a list of upcoming webinars in the sidebar of the page:
The best part of this method is that the webinar list will be updated automatically. You don't have to insert new webinars or timeslots manually. Awesome!