Panasonic KX-TVS90 Installation Manual page 109

INTEGRATING THE VPS WITH THE PANASONIC KX-TA SERIES PBX AND KX-TD SERIES PBX
3.
Click "CO Key" in the upper right corner. "Flexible CO Key" screen (for all CO Keys)
displays.
Screen output:
4.
Click the Key Number to which a button will be assigned.
"Flexible CO Key" screen displays.
Screen output:
Installation Manual 109