Change GetAxis("Horizontal") into New Keys

I’m creating a sortof Minigame for my game, and it has cars. I found a script, but the default controls are W,A,S,D and Arrow Keys, which I can’t use because my player has those controls (The car is an RC car the player can use while playing). When I downloaded it, I thought I could just remap the controls to I,J,K,L, but instead of showing the actual keys, it has GetAxis(“Horizontal”) and GetAxis(“Vertical”). How can I remap these to J,L for Horizontal and I,K for Vertical? Thanks

These keys are assigned in the Input manager:

Edit > Project Settings > Input

Open the 'Horizontal" and ‘Vertical’ axes and change the Negative and Positive and Alt Negative and Alt Positive buttons.