Avaya phone system to many lights

On most phones, a red light indicates a message in voicemail. You need to press the MESSAGE button and follow the instructions on pages 4 and 5 of this reference manual.
https://downloads.avaya.com/css/P8/documents/100130184

Have you tried to retrieve any message? Sometimes another extension will set the MW light on inadvertantly.
Calling the VM won't help but if your retrieval attempt keeps ringing it will be a phone somewhere within the system. FIND IT & Answer the call at THAT extension and the light should go out. NB sometimes there can be more than one in Queue. Panasonic stack up to 8.

Call someone who fixes these phones

When you get a new voice message the red light turns on. As long as you don't check the voice message the red light stays on.

Another person in your office could of mistakenly turn your message light on. To turn off your message light press feature 10 then your extension number (feature 10 xx).

Changing ringing on a Partner system is done on either ext 10 or 11.
At one of those ext's press the feature key and "00"
Next press the left hand intercom twice
The display should say system programming

Press the right hand intercom once. The display should say Central telephone Programming.

Enter in the extension number that you want to program.

Press the line that you want to ring.
A solid light on the line means immediate ringing
A slow flashing light means delayed ringing (meaning the phone will wait 3 rings before starting to ring.)
A fast flashing light means no ringing..

Press feature "00" to logout

What kind of system is it on?

do you have a manual? the programming code escapes me...you need to remove the lines on that phone. it wont let you program a button over a line button, so you must first remove the "Line appearances" then you should be able to.

Let me know if you need to code for the removal of line appearances....

If the voicemail you want to use is Verizons, it will NOT light the light on your phone.

For that to happen, you would need a voicemail through the phone system

Glad to hear it