RC Phone red voicemail light to blink while monitoring another extension voicemail box

For example, extension 1 is a reception line and forwards voicemails to the night time general mailbox, which is extension 2. It would be useful if the red light on the physical RC Phone could be set to blink still when a voicemail comes in and is forwarded to extension 2.

So essentially if a voicemail box monitoring option for other extensions could be created which makes the light blink.