If you are looking to enable encoder side multiple bit-rate broadcasting it is important to send the necessary info to StreamSpot so the Streaming platform can be updated.
First, submit a helpdesk ticket to firstname.lastname@example.org. In this email include your requested resolutions and bitrates (up to 3) that you wish to broadcast in. No one bit-rate may exceed 2.5 Mbps.
After the development team has made the necessary changes you will be provided in the same ticket the necessary stream names that will need to be used in your encoding platform.