Change home position on table?

I have a TM3 with the accumove controller and need to change my home? position so when I datum it shows up in a different spot if this makes sense? Thanks for the help.

 

You will need to contact Tech support and they can assist you with that.

 

OK, thanks

 

I just talked to tech support and they said that they could not do it. I could have sworn that I changed it before?
I don't understand why it can't be changed? I know on my other table I could set it wherever I wanted.