How do you assign a line pool to appear on the top button of a 7208 or 7310?

I have assigned the lines as a newly created line pool "C" and have assigned the extension to Pool "C" however the extensions were previously set up for line pool "A" on the first button and I can't replace it with "C"?

I would sure appreaciate any help on this!

Thank You

Staci

Do the following:

Press:
F*3
top button
F64 and the line pool access code eg:9,7,3, etc.