Need Help Omega QR Codes

I would check online for bar code generator apps, and see if they can make what you need. Then work around - zoom in - vectorize what you need. Thats the only thing I can think of if Omega doesnt have the symbol.

 

iam not sure i catch your drift about the missing characters
there are all sorts of bar code generators & different keyboard layouts & character maps you can use. you want a 2g barcode generator

https://barcode.tec-it.com/en


if you have these characters, can't you simply cut and paste them?

 

Might it be an ASCII code? Look up ASCII code table on Google and maybe the symbols you need are on there. Then you just hold the ALT key and type the number of the symbol you want. ☺☻♥♦♣♠•◘○ etc.