I have another distro in dualboot with KDE and a right click on a program in the menu has the option "add the element on the Desktop" (as I am in French it's "ajouter l'élément sur le bureau") I think Mint KDE should have the same thing.
K.I.S.S. ===> "Keep It Simple, Stupid"
"Simplicity is the ultimate sophistication." (Leonardo da Vinci)
"Everything should be made as simple as possible, but no simpler." (Albert Einstein)