News articles that dont show in menu

I have made a menu with wayfinder using this tutorial:

http://www.muddydogpaws.com/development/wayfinder/examples/example-2.html

Problem: My index is a subfolder with articles that functions as a news blog, i don’t want these articles to show in the menu. I know you can unclick the option "show in menu" when creating the article, but i want this to be done automatic. So when my client makes a new document under index he dosen’t have to unclick the option. Is this possible?

Thanks

:)

You can use the ManagerManager plugin to control the default values of document variables.

For example, to disable the "Show in menu" option you could could set up a rule:

or:

If you don’t want that to apply to all new documents, you can apply the rule to specific templates.