Before & after school help needed

We are a family with two kids (8 & 10) who attend the local school and two kids (15 & 17) who are with us some of the time, as well as a friendly cocker spaniel dog who is in the home. I'm currently solo parenting whilst my husband is away re-training to become a police officer and when he returns he will be on shift work whilst I work in an office. I would love some help with the kids before school on a Monday and after school on a Tuesday, which would involve getting them to local activities (car not necessarily required). There would be an opportunity to increase these hours on certain weeks.

- Ensuring the kids get to and from school safely - Taking the kids to swimming (able to walk there from our home) - Occasional potential oversight of homework - Occasional meal preparation

Someone who enjoys spending time with kids and is happy to help take them to local activities (swimming) and hang out at home! Would be an ideal fit for a university student / school leaver who has some flexibility with their hours, who has had experience with babysitting in the past.