In order to change settings for the Broadcaster mini, you will first need to have it connected to WiFi and paired to your account.
In the Livestream mobile app, go to Settings > Livestream Broadcaster and select your connected Broadcaster mini. The following preview will open:
To change the event you are streaming to, tap the title at the top of the screen. A dropdown list of your events will appear. Tap the event you want to stream to.
On the main preview screen, tap the gearwheel in the upper right corner to enter settings.
Here you can adjust the quality, video and audio input settings, change your connection. You can also switch the Broadcaster mini to Studio mode and perform a factory reset remotely from this menu.