Like any other disability, hearing impairment has a wide variety of degrees. Those who have it may require assistive devices when communicating and additional support to get their message across.
As someone who is there to assist, try to remember not to make assumptions. Each person is different, and their disability may require them to be helped unconventionally. But don't worry! They'll tell you exactly how you'll be of assistance.
Photo by SHVETS production from Pexels.