In Tendenci, the Articles and News modules have similar functions.
Because of this, you can use the tabs to get from Articles to News or from News to Articles.
From inside the module, hover over its corresponding tab and you'll see a few options drop down. Click on Settings.
This option takes you to the Settings page. This is where you can enable or disable the Articles tab in the News module or the News tab in the Articles module.
Scroll to either "Show Article Tab" or "Show News Tab" and select true or false. "True" means the tabs will show, "False" means they will not show. Click Update Settings when you're finished making changes.