Part Time After School Recurring Nanny

We are a family located in powder springs ga. I am looking for a part time nanny to assist with after school pickups as well as after school activities. I as the mother travel each week but my schedule each week flips biweekly and my husband will be working in the afternoons starting at 1 p.m. So we are needing someone with a flexible but recurring schedule to assist with getting the kids after school and providing transportation to and from gymnastics class for my daughter who is 8 in 2nd grade and other days for tutoring for my son who is 11 in 6th grade. One week we would need someone in the afternoons Tuesdays-Fridays and the opposite week we would need a person available just Tuesdays-Wednesday's but it would be that schedule consistently. We would also need homework assistance for both children