on Helping Writers become Authors:
Sooner or later, most authors find the constraints of POV frustrating. It can be difficult to observe the strictures of a tight POV while still showing readers all of a scene’s necessary information. Seemingly, one of the easiest ways around this problem is to simply add a new POV from a character who is able to share the information you want to convey.
However, it’s always wise to think twice before adding another POV character.