??? I know where the button is and how to modify the toolbar. What I can't find is a command that allows you incrementally cycle through that specific button ON the toolbar.
On pro tools, you hold down Opt + Cmd, then repeatedly tap your - + keys to nudge the value from /4 to /8 to /16 to /32 and so on. Logic seems to want you to dedicate key commands to each specific nudge value. Apple may think its cool, I think its ridiculous.