On a website I intend to have a "slide in help menu". With that I mean that there will be a Help button on the right of every page of the website, if this button is clicked then the visitor remains on the same page but a help menu slides in from the right (filling only part of the screen), the help menu is laid over the current page. The help menu would contain a FAQ section, which lists questions and answers.
My question now is how to approach this from a SEO perspective? The content of the FAQ section is of course nice content, and it would be good if it could be indexed. However, it shouldn't be indexed on every page of the website! I think it would be best to create a seperate page domain.com/faq/ where the FAQ content is also published and indexed. And then to make sure that the content in the help menu is not indexed.
Would this indeed be the best approach?
And how could I best make sure that the content of the slide in help menu would not be indexed?