ZX Spectrum emulators with keyboard remapping?

Hello, I just tried Spectaculator and Fuse and I can't find options for reassigning the keys.

I just need to reassign keys. When I push "A" on the physical keyboard on my PC, the ZX Spectrum machine inside the emulator, to see that i pushed "6"

That's all I need. I am not sure how this thing is called: keyboard remapping or key reassigning or maybe there is another term for that. But I need to be able to redefine keys.

Is there any ZX Spectrum emulator that can do that?

Thanks