I have 3 daughters who are learning to drive at the same time (heaven help me!)

We are about to buy a small economical car Group 1 or 2 insurance with low road tax for them to use and gain experience. What would be my best approach to insurance?

Does anyone offer a multiple policy that recognises they are sharing one car and therefore will have limited access and time on the road or am I about to get taken to the cleaners!