While you are in “Appearance” Menu tab, Switch on the “Link Target” which is inside the “Screen Options”. After you do that, you can make any menu to open in new window by checking the checkbox “Open in a new tab” option.
While you are in “Appearance” Menu tab, Switch on the “Link Target” which is inside the “Screen Options”. After you do that, you can make any menu to open in new window by checking the checkbox “Open in a new tab” option.