Linking posts to multiple menu's

Hey!

Ok I will try explain this as best I can and will be grateful for any and all help.

Ok so our site has sliders at the top a menu just underneath and then catergories down the right hand side. When we make a post is there a way to link it to not only the catergories but also the menu underneath the sliders and to the sliders itself. We are add it to one of the menu buttons under the sliders each time but want to be able to add it to 2 of the men buttons and 2 sliders for each post. Is this possible and if so how.

Hope this makes sense 🙂