Is that sensible? I don’t follow what Dorico is doing.
I also tried moving the Tom 2 line rhythmically over a quarter, but that gives equally odd results. What aren’t I understanding? It doesn’t seem to work the same way it does for a non Percussion kit.
You could try temporarily changing your kit display to individual single-line instruments and putting a quarter rest in the tom part, but you are right: percussion does not work as other instruments do. The Dorico Team is aware of this and is working on this situation.
If you don’t want the triplet quavers in that first beat anymore, just delete them.
If you want to show a quarter note rest in addition to the triplet quavers, you could try inputting the relevant rests/notes whilst showing the kit in the single-line staff presentation, to make sure the fundamentals are correct before showing the consolidated presentation (as Derrek suggests too).
I believe there are a few little corners in relation to Insert mode and tuplets - unless you really need Insert mode here, i.e. you want to push subsequent material back at the same time as adding the rest - I’d suggest trying without it. Or doing it manually - insert a beat into just that voice, which should result in an extra rest anyway.
Yeah I want to keep the existing notes, just push over, so temporarily going single staff (Layout Options - I assume there’s not another way to do it) made it work as expected. Thanks!