How do I set the parent id by default when adding children?

I am using the cookbook example (organization->employees) from the project page. I can view existing employees and add new ones. The problem is that the new employees don't get added under the organization (The parent id node reference gets created empty).

If I include the parent_id node reference (organization_id) in the view and set it manually it works. However, ideally the user should not need to select the orgnization since they are already adding this user on the organization page.

Any help would be a huge help.

Thanks,
Ben