Babysitter Needed for my Children

We have four children (4, 6, 8, and 14), however only three need supervision and guidance, and we will be home working remotely during all times that we have someone watching the children. We would like someone that is able to help keep everyone off screens and playing peacefully while were in meetings, and someone that can prepare morning snack, lunch, and afternoon snack. We have two pets, a 15-year-old medium sized mixed breed dog, and an 18-year-old indoor only cat. Depending on the comfort level of the person that helps us, we would love someone that could take the kids to the park or on a walk in the neighborhood occasionally.