Custom link in category bar

Hi guys!

Thanks for all the great work you do.

I just wanted to know if there was a way of placing a custom link in the category bar which doesnt link to a category.

Basically what I am trying to do is provide a link for users on my webpage to post a new post (my users use the blog system as a noticeboard).

So ultimately it would be a link after the last category saying "Post New Notice" and would link to the page.
mysiteexample.com/wp-admin/post-new.php

I'm dealing with a group who are not the most computer literate so if I could implement this it would be great!

Thanks!!

Sam