Navigation not only helps users access content throughout your intranet, it helps them to understand what information is available on the site.
There are two main types of navigation available for intranets: Global Navigation for every page, and Site Navigation for a specific site.
Navigation is one of those things that's easy to create, but hard to do right. Given that you're creating navigation for your users, we highly recommend getting users involved in the process. We have some great blog posts to help you on your journey.
From the Intranet Connections Blog
Not sure where to start with your navigation? Get users involved - they're the ones who will be using the intranet daily and need to locate information.
Card sorting is a very helpful method; to do this, give 10-15 representative users (either individually or in small groups) cards that are a representative sample of intranet content, and ask them to group them into meaningful categories and name them. Finesse the categories and their names with your project team, then get a new set of users to place the same content cards into the new categories. Finesse the categories again. Work with the project team to draft possible future content items for the intranet - do those fit within the categories? If not, finesse the categories again as needed.
Learn more in this helpful article from the UX review, Card Sorting - The Beginner's Guide.
Global Navigation appears on every page of your intranet, typically along the top of the page, as shown in the example below. The navigation style may vary, and can include a simple click on a name in the navigation to land on the page, drop down menus, or mega menus with categories and lots of choice.
To edit the Global Navigation, click the edit pencil on the right side of the top navigation, as shown in the image below.
If you just want to edit the navigation, mouse over the area and follow the information for Edit Navigation.
If you want to add a new section to the Global Navigation, click the large + sign on the right. You'll be presented with the choice of three options for your new section, as follows. Note that it isn't possible to convert one type of navigation to another (e.g. change Single Menu to Mega Menu); you would need to create a new menu section of the type you want, then delete the unwanted type.
After making your changes, when you're satisfied with your new menu item, click Save Menu at the bottom of your screen.