Kazakhstan 1993 proof (or how to add proof fields for existing date?)

Hey, Numista team:)

There are missing proof options occured for:
https://en.numista.com/catalogue/pieces1533.html
https://en.numista.com/catalogue/pieces1538.html
https://en.numista.com/catalogue/pieces1539.html
https://en.numista.com/catalogue/pieces1540.html
https://en.numista.com/catalogue/pieces1542.html

but they are exist, 50000 ex.
how to add these "proof fields" for concrete year? the menue doesn't let do that

Maybe there should be an alternative to add coin/proof sets? I mean, since the sets has a different price from selling the coins 1 by 1, it might be an idea to sort these coin/proof sets separately? At least in Krause the sets are listed separately.