I am making a plane that has cannons and guns, and i don't know how to fire them with the same button.

My question is: can you fire cannons and guns with the same button by modding it with xml? If yes, please tell me how, that would be VERY helpful

At least one of these needs to be solved:
1. Firing cannons and guns using Fire Weapons button
2. Firing cannons and guns using Fire Guns button

If you don't know what i mean, what i need to do is to make the cannons and guns use the same button (either just fire weapons or fire guns) to fire