Panasonic KX-TD500 System Reference Manual page 1019

Function
The following functions appear on the function line of this setting screen.
1 COMMON 2
COMMON (SHOW LV, CHG LV, INS, OUS, REMOVE, EXIT) and HRD CPY keys
are available in this setting screen.
For operation, refer to Section 8-I "Operation of Function Keys".
3 4 5
10-D-69
6 HRD CPY 7 8