If you are the admin of your brand you have the access to change whether or not your brand is broadcasted to the app.
If you select 'Hidden' next to a user name the streams from that user are not broadcasted to the app and are only visible in your embed player.
If you select Legacy is for people who want to stream on consumer on their off time. It is a simple protection that helps manage when streams are going. If Legacy mode is check that users stream will be pushed to the player at all times. If Legacy mode is un-checked that users streams will only be pushed to the player if they tag the brand.