Hello Florian! Happy to help with this. Currently, you are only able to have one host for an event. A potential workaround is to add "Sponsored by" or "Hosted by" to the event title. If you are on a Pro or Plus plan, you can add the co-host as a sponsor and add the co-host as a sponsor and show their logo below the banner of the event. Alternatively you could add the co-host as a highlight to your event which would allow you to add their name, logo, and website link to the event. Additionally, I having the ability to add a second host would be a a great suggestion that we could bring to our product team for consideration in a future event update, so I'll add this request to the suggestion board!