Edit "Product Manager" content by users according to roles and rights as restricted user

As it is now it is not possible to edit "Product Manager" content as a restricted user.

So in the future, asap, we would like it to be possible to edit (read/write/delete) "Product Manager" content as a rescrited user. But only products (of cause) the restricted user has access to. And fx as a user with the role "Manager"