You can create chord sets and save them in the USER directory (see the Saving Chord Sets in 2.7 and Export State vs Saving Chords Sets tutorials).
However, Scaler 2,x does not yet save timing information with the chord sets if you simply save the chord set. But if you set playback durations in the EDIT page (see Setting playback timings/durations) and Export the Scaler State then the playback durations are saved in the exported state and can be imported back into Scaler.