FIRSHER'S PROFILE

As said in the title I am an absolute newbie at this. I've done some stuff, messed around with a couple things but all in all I'm completely new.

For our final project at school my partner and I are making an RPG video game.
One of the key elements we need in the game is for the user to switch between two actors using the space bar.

I've made two common events, each one removes an actor from the party and adds the actor I wish to switch to.
After I did that I made those common events into the corresponding actors skills.
It switches between characters just fine but you have to go under the x button than go to skills then press on the skill for the character to change. I just want to make it to where all you have to do is press the space bar for the characters to change.

I hope I explained this all right.

(Side note: I know what scripts are I just have no clue how to use them if I were to have to use them in this scenario.