@Marc_Dillon Hm, in my case: I don’t know how to: CountProductsInOrder I think we need create a new virtual colomn, but what i write in expression?

@Marc_Dillon I create excel file with example what i need: docs.google.com Exmpl Orders Order,EnumList_Products 1,Product1 , Product3 2,Product2 3,Product1 , Product3, Product5 4,Product1 , Product4 5,Product2, Product5 6,(blank) My app not a public ...

@MultiTech_Visions many thanks, I have question (anybody ) : If i need create chart(view, percentage), using the example data from this post: Chart: products and orders in numbers Product1 has 3 orders Product2 has 1 order … What i need? Thank you