In addition to Noel's excellent message another way to practice triads would be to input chords in the chord window. This is the first screen you will see when you open BiaB. Put a chord in the first measure, move the cursor to the second measure and input another chord. For example if you put a C chord in the first measure and a F chord in the second you will get 4 beats of C followed by 4 beats of F, assuming of course that you are in 4/4 time. You can of course change the time and key signatures as well as the tempo.

You also can either play all of the tracks or any number of tracks that you select. For instance you can play all of the tracks to get started then mute all but the drum and bass tracks as you practice.

I hope this helps and good luck.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware