position of rests

For my taste Dorico notates rest sometimes a bit to “jumpy”. I prefer to have them on the same height. In normal parts, I can change the position using the property, but in this Drum Part I didn’t find a way to change this. I’m not doing drum parts often. Did I miss a setting?

No, there’s no setting for this at the moment. Obviously rests in percussion kits are not currently editable, but that is something that we will certainly address in future.