I am not aware of any possibility to change the standard behavior of double clicking to invoke the caret at a rhythmic grid position.
In the current way, I need to be really careful not to accidentally hit a note, or since I am clumsy with the mouse, move to another staff (often by scrolling) just to be sure to hit the grid. Especially with double clicking, the first click can move the mouse a bit making it likely for me to hit a note on the second.
It would be easier for me instead to for example hold down ctrl (or any other free modifier combination) and click once.
One option would be to get a mouse with a third, middle button (less common these days). Some mice allow you to program this button and you could set it as a double-click if it isn’t already by default.
This isn’t the point of your request, but this is one of the things I love about using a trackball. You can take your hand off the ball entirely and click to your heart’s content, and it won’t move the cursor.
Admittedly, the mixer is a bit of a stretch, but I’m usually standing when I’m making my recordings, so it’s no problem. (The whole thing is a giant L-shaped standing desk.) I also have the keyboard tray indented a little under the desk.
I could buy all sorts of fancy equipment to facilitate things, but in the end I am writing a lot when traveling with mostly nothing but my laptop’s trackpad – and if there would be a possibility for Dorico to implement this, I’d happily safe the bucks for the needed upgrade
If you’re on a Mac, couldn’t you rig something with Keyboard Maestro? One of the things I have found helpful is mapping the Caps Lock to be the same as pressing Shift+Control+Options+Command - this opens up a lot more key combos. So you could put together a macro in KM
