School Pickups

I am divorced and remarried. Before I got remarried, my ex was successful at not having my current wife pick up my kids. What can I do now to make sure that the wife can pick up my kids at school and pre-school?

My ex has primary physical. I have secondary physical. We have joint legal custody.

Is there a law that addresses it?

If the order or agreement specifies that your new wife cannot pick up the children, then she cannot.

The new order does not address her picking up the kids.

Then she may.