@Talin Khodaverdian Welcome to the Atlassian Community.
By areas, I am assuming that you are talking about spaces in Confluence. Each space has it's own navigation on the left hand side. You also have the ability to use navigation macros to create menus on pages. https://support.atlassian.com/confluence-cloud/docs/use-macros-to-add-navigation-on-confluence-pages/ If you want to change the top navigation there is not a way to do that without an app like refined but even that is limited to what you can do.
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
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