Yes, I’m afraid I don’t think you can do this at the moment. Each grace note of course belongs to a different instrument in the kit, and so those grace notes are input at the same position as each other: each instrument has a single grace note at the position immediately before the rhythmic quarter note. I’m not sure how we would be able to sort this out – we will need to think about it.
I was able to get this to work after all. I went back and watched the percussion video for like the 5th time and saw some examples of more than one grace note. So there had to be a way to do it. Just enter the grace notes on the same instrument and then move one of them using alt-arrow.
Ah, of course, that was the thing I was struggling to remember. Well done! (I was going to ask Andrew, the developer who did most of this work, about it when he gets back from his well-earned long weekend off, but now you’ve figured it out.)
It should be noted, that this workaround won’t work anymore in version 4.1.
I couldn’t find a new workaround (like inputting all 2 notes togethen, then delete the opposite one).
Any help would be appreciated!