When you say label keys in the title, I think you are talking about the square touch keys and not the rectangular label keys.

Looks like you might have to use the AX remote editor. See Option 2 on page 14 of the manual. I couldn't find anything else in the manual that tells you how to do it on the remote.

You could try the procedure used in the 3000/3100 remotes, which is: When you are in the learn mode, press and hold the component name key, then press the touch key repeatedly to scroll through the choices.

Don't know if this will work but it is worth a try. Let me know what happens.