Post an event
Most chapter pages list events on their left sidebar. Look in the sidebar for the "post an event" button to add an event in that place. If you have recently created a new place page and wish to add event listings & a "post an event" button to your sidebar, tag your page with events:theregionname, for example events:gulf-coast. If you have questions, email email@example.com.
How to host an event
Want some advice on hosting an event -- how to reach people, what to provide, how long it should be, etc? Take a look at the Host a Balloon Mapping Workshop page for some great tips.