Want to know about support events going on out in the world? Check out #events. Any local meetups/events from the #zlocal- channels get reposted here. In addition, if there are company-hosted events, conferences, meetups, etc. this is the place to let the rest of the community know.
If you're posting an event yourself, make sure you post a link to the event, or give enough information so people interested can participate.
Also if you're attending a support focused even and you want to talk with other attendees, look for #event- channels. For example #event-sd-summit is for attendees of the upcoming Support Driven Leadership Summit or #event-sd-expo-europe is all about the European SD Expo.