I assume by 'pre-recorded tracks' you mean RealDrums (audio).

IMO this takes some 'advanced' effort in BiaB (a little easier in RB IMO).

One thing to try is generating a drum track using a realdrum selection that is not the 'default realdrum' for that style. Auditioning a bunch of different ones to find one that's close helps save time. Look for 'Audition' in the Manual or during the options presented along the path when generating a new realdrum track.

Or try adding the hihat as an additional MIDI event. It is possible to use both MIDI and Realdrums.

Like I said, to me this would be much easier in RB or another DAW.
In RealBand you can take advantage of some things that are currently very hard to do in BiaB, and when you want to start surgically changing tracks, that's the way to go.
It also has many more tracks to experiment with.

I do not work here, but the benefits are still awesome
Make your sound your own!