How does co-childminding work?

Hi Everyone

Could someone please explain how co-childminding works? Do you alternate working in each others' homes or do you work in your own home & just share the children on alternate days? I'm probably being very thick but have never known how it works!

I co-mind with my daughter and she comes to my house to work, her house is not registered.

I worked as a co-childminder at my friend's house. I was registered as a childminder in my own right. I worked there from 8am-6pm and all the children were cared by both of us.

I now work as a childminder from my own home.