Yes, the line does appear on the phone.
I have been able to set this line to - No Rinbg on (2) other extensions & it worked fine.
On the Manager's phone (ext. 13),I press Feat 00, I press the button for his line - it appears as line 01 on the display.
On the Receptionist's phone (ext. 10), I press Feat 00, I press the button for the Manager's line - it appears as line 01 on the display.
On the Secretary's phone (ext. 19), I press Feat 00, I press the button for the Manager's line - it appears as line 08 on the display.
I have performed all the steps you had previously sent. However when I get to this step > "then press the button of the line you want to change check the display to see the programming"
I press the button of the line I want to change & instead of displaying line 01 (which is the line I want to change)it displays line 08.
Does it sound like I have a some kind of multiple line conflict?
FYI - Line 08 is no longer in use but does still have dial tone.
Please advise