Set a Menu Item Link to Open in a New Tab/Window

WordPress’ native menu functionality enables you to open set any link to open up in a new tab/window (along with a number of other additional options).

To do so, navigate to Appearance » Menu in the  WordPress Admin:

Menu Options

Next, click the “Screen Options” tab at the top right-hand corner to reveal additional menu options:

Additional Menu Options

You can now select whether or not you would like a menu item link to open in a new window:

Open menu item in new window