The UI menu to store and remove supplies from the supply crates is rather awkward. Supply crates would be much easier to use if you could store and remove supplies from them the same way you can with supply barrels.
Facing the crate and using Main Interact (F key on PC) would remove a supply, using Alternative Interact (R key on PC) would store a supply. Pressing and holding the F key would pickup the crate.
A normal key press and the press and hold action provides the player with two ways of interacting with something using a single key. The Store, Remove, and Pickup actions can all be placed on the two interaction keys making the UI menu for the supply crates to store and remove supplies unnecessary.
