From the Sign up page you are getting right on Events page that looks something like this:
You can start an instant event right from this page by clicking the corresponding button:
The second option you've got as far as events go is scheduling an event. Press the corresponding button:
It will take you to the event planning page, that looks like this:
Fill in the balnks. Pick a name for your event, appoint time. Choose the access type: private or public. Push the "Recording Autostart" button if you prefer (available in Premium membership only). Opt for a Permanent Room if you wish to have a room available for you and your guests at all times (available with PRO and Premium membership).
Every event you've organized will appear in the list on your Events page. The list will look like this:
Click the "Completed" tab to see the list of the conferences that you have hosted in the past.