Mac: How to re-link the Unreal Engine version 4-27

Is there a way to re-link the Unreal engine after I have cloned a computer? We are using Unreal in a computer lab on iMacs… and once I clone a computer it loses the link to the Engine because we have the engine installed on a separate partition. I’m trying to avoid having to download the engine and re-install it. I am using version 4-27