Companion Care Needed - Full-time / Part-time

I'm looking for hands-on care for my mother in her 70s. She has middle stage Alzheimers. My father has been her primary caregiver for the last four years since her diagnosis, but care for my mother has grown to become too burdensome for just one person. My father needs a part-time helper to spend time with my mother so he can get his own list of chores done. He may also need some assistance with those small chores (vacuuming, laundry, light cleaning, etc). We would prefer someone who is experienced with Alzheimer, can handle light housekeeping and some meal preparation.