Maximum quantity in child products- custom fields

[afentiko2000]

Hello there. Sorry for my english. If i set max quantity 1 to the parent product and have 2 childs i can add to cart 2 products 1 for each child. I would like to know if there is a way ,coding or plugin, to set a maximum quantity for child products purchase and restriction adding to cart another child product from the same parent. Thank you.
VM 3.6.10 J 3.9.15

[Studio 42]

This can be done using a customfield plugin, but i dont know if this already exist.

[afentiko2000]

Thanks for the answer