How to customize the context menu "Insert Unicode control character"

Question

Can I customize the context menu Insert Unicode control character on Windows 10 21H1?

If no, how to provide easy input of 40-50 frequently used Unicode characters in Windows 10 21H1 by selecting them from a custom list (instead of using the Alt+hexadecimal code)?

Thanks

Answer 1

The menu is hardcoded inside user32.dll.mui (with different languages in C:\windows\system32)
So it cannot be changed, except by program (in C++ for example)

Answer 2

2Castorix31

Thanks,

Do you have any idea about the second part of my question?

How to provide easy input of 40-50 frequently used Unicode characters in Windows 10 21H1 by selecting them from a custom list (instead of using the Alt+hexadecimal code)?