Multiple uses for an item.

So, I'm working on a Black Clover mod, and I was struggling with how to add multiple different attacks to a weapon.
In Black Clover, people utilize magic through the use of a grimoire, and as such have access to quite a few different spells. I was wondering how one would bind a key while holding an item that uses a different attack.

I'm new to the modding scene, so any help at all would be wonderful. Thank you!