labels on line keys

[engine411]

Hello, using T38G with latest firmware, how can I label the line keys if they are set to Line function? When set to Line function in the web GUI, the label field is not editable.

But to clarify, maybe I am doing the wrong config for my needs. We have 6 incoming lines, and I want all phones to use the 6 line keys for any call to/from the PSTN. If Line 1 is active, then Line 2 is used, and so on, so any incoming PSTN call can be answered at any phone, and any phone can make a call to the PSTN on any of the 6 lines. Is this functionality what the "Line" function is for?

Thanks!