You can override any Alternote shortcut with your own using built-in OS X tools. You can even set a shortcut for a particular notebook. To do so, open System Preferences → Keyboard → Shortcuts → App Shorcuts. Press a button with + icon, choose Alternote from the list, type in Alternote menu item with shortcut you want to override. This is case sensitive, so be sure you type in exactly the same text as in menu. Pick a shortcut and hit “Add”. That’s it!