Different Motions/Performances in Main Track

Not sure I am doing this right. I want to create a progression with multiple motions on the main track. The only way I have found to do this, is to add the motion via the sketch page, then add to main track.

If I try to then add chords to main track, say via the explore page, there is no option to add a motion to the chord. Am I missing something obvious?

Works fine via sketch page, but means I have to remember to add to sketch first, add the motion and then add to main track…, which is the way I found when I tried modulation pathway.