Yes we do, under the part of the channel, you can choose to add additional bitrates in the first step.
Please take note, if you add more bitrates you will have to update the
information in your encoder to match what's in your DaCast account.
Also, you will need a large enough upload speed to support the multi-bitrates
as well (for example, 200 kbps + 600 kbps would be the same as broadcasting at
800kbps and you would likely need an upload speed of over 1MB a second).