After recording the MIDI piano performance, go to Notation View by hitting the 8th note toolbar icon, then select Options from the top LH of the Notation View, in the lower center of that is a dropdown listed as transpose, hit the little arrow next to the dropdown and choose the Piano notation view. Below that is the area where you can enter the Split Point.

There is also an automatic Split Point routine, see the Help file inside BiaB on setting that up if you like. I usually use the above method.


--Mac