You can only add an event if you are a business. If that is the case go to your "Our Profile" tab.
On the left navigation bar you will see a button called "Add Event". Click it and fill out the following fields.
You have to choose the right sports group for your event. If the location of the event is in the hotspot database you can check off the box and search for the hotspot. If the hotspot does not exist yet of course you can create it. If the event location is no hotspot just enter the location without checking off the box. Click "Publish Post" to publish your event. The event can also be seen on a hotspot detail page.