Parent and child

[VopoloS]

I have a product with multiple dimensions. For example: S, M and L.

S size product in stock = 3
M size product in stock= 10
L size  product in stock = 5

I need to satisfy the condition "Do not Display Product, if child products also out of stock".

How much the parent product, I must point to a warehouse (parent product in stock)?

If I point the parent product is in stock = 0, then I can not put a child to cart product (even 1 piece).

If I specify the number of the parent product = 1 or> 0, then the condition is not "Do not Display Product, if child products also out of stock", when children run out of stock products.

Is there a fix?