Rifle and pistol slots. (S.T.A.L.K.E.R.: Shadow of Chernobyl)

Hey all!
I have a question...
How to put rifles,shotguns (for example AKS74 or SAVED) in the pistol slot?And pistols (for example PM) in the rifle slot?The similarity in Call of Pripyat
Me icons, etc no need to edit my inventory from AMK,I'm talking about configs.


Picture of inventory