How to use certain keymaps of IntelliJ Idea with german Mac Keyboard

update I'm using us layout now. But the problem is that the key bindings are not bound to the characters a key would produce but to the key itself. So for example commenting is cmd+- as `-` is on the same key on German layout as `/` on us. So cmd+\ translates to cmd+- on German layout. It's not fixed on Idea14, don't know about 15. When using default shortcuts of IntelliJ Idea, some of them are not working properly on a German Keyboard. Mostly because there is a key that is available without pressing `Shift` on an us layout. E.g. pressing `Cmd`+`;` can only be achieved by pressing `Cmd`+`Shift`+`,` on a german layout, so this keymapping for opening the projects structure doesn't work. I helped myself out by mapping `Cmd`+`Shift`+`,` instead of `Cmd`+`;`. However for `Cmd`+`/` (toggle line comment; `Cmd`+`Shift`+`7` on german layout), this is not working. First problem of course is that `Cmd`+`Shift`+`7` is already mapped unlike `Cmd`+`Shift`+`,`. So I tried to remap to `Cmd`+`Shift`+`L` which wasn't mapped already, but the comment toggling won't work. I gotta add that I'm using IdeaVim Plugin and I have three different options that are called "Comment with (Line|Block) comment", all under a different hierarchy (Code->Folding, Plugins->IdeaVim and just Other. Which one is the right? How do you tackle these problems on a non-us layout and a mac keyboard?