[Plugin: NextGEN Gallery] Album/Gallery linked to post

Hi there!
Im trying to link a album or a gallery to a post instead to a page, but I can′t. Of course I can do it manually just using the shortcode but then I have to link everything manually.

I want to do it because when I created a new page, the page its added to the menu and then the menu doesnt fit anymore.

Hope someone can help me!

https://www.ads-software.com/extend/plugins/nextgen-gallery/