try this...go to settings...hi light the first city...then dpad down...that should put you at Add New...dpad down again...your at the Delete button...dpad down again...your at the Edit button...dpad down again...your at the Up button...dpad down againnnnn...your at the "unkown" button, you might not see it...dpad down one more time, now you're on the Units button...hit the dpad and you're there.

my bad earlier missed a button