10-36T Cassette on Kickr Bike

Anyone know how to get a 10-36T cassette setup in the Wahoo Fitness app? Trying to mimic my BMC Teammachine SLR01 THREE setup and have everything else lined up but can only see 10-33T as an option. Guessing I could go custom but not sure how that works and can’t figure out why 10-36 is not an option.

In case you are wondering, yes I did put a 10-36 cassette and new RD on the BMC in place of the 10-28 cassette and original RD that came with.