Enable Line Info Layer
1. Login to the Web UI of the D765s and switch to Admin Mode. Navigate to the Advance > Behavior settings.
2. Find the "Line Info Layer" setting and click on "More Control" to the right of it.
3. Once in the More Control page. Press "On" at the top of the page. Then Click "Apply" at the bottom of the page and then "Save" at the top.
4. This will enable the Line Info Layer for function keys P1 - P4 on your LCDs