Can you have more than 2 screens in your keyboard?

I find it there is not enough space in my keyboard for the font I am working on ( No Shift & Shift key pressed ). Is there any more key like Crtl key to get more screen? I might need 3 or more screens to get all the glyphs. How do you do that? Thanks

You can try AltGr (aka Right Alt) and Shift AltGr.

Thank you, let me try. Thanks

The conversation has been resolved.