Feel free to post what you've changed as a sanity check. Once you see your existing M584 command in config.g it should be apparent on how it works. Choosing a new drive letter and assigning a driver number to it.
@droftarts I need to thank you again for all your help. I figured everything out now and the machine appears to be working fine. Everything homes as it should so you can disregard my previous reply. Once again thanks so much as I couldn't have set it up without your help.👍 ☺