When setting up keybinds on the PC, I can't figure out how (or if) I can set it to where I'll keybind a dagger to 1, and a mace to 2, and one goes to my main hand, the other to my off-hand. As it stands, pressing 1, then pressing 2, will simply equip the dagger in the main hand, and then equip the mace in the main hand, making it entirely pointless.

Any help is appreciated. I know I can eliminate the issue through left and right mouse-clicks, but I'd like button utility if possible.