function.php内で以下のところに追加する。
// This theme uses wp_nav_menu() in two locations.
register_nav_menus( array(
‘top’ => __( ‘Top Menu’, ‘twentyseventeen’ ),
‘social’ => __( ‘Social Links Menu’, ‘twentyseventeen’ ),
‘foot1’ => ‘フッタ1’,
‘foot2’ => ‘フッタ2’,
‘foot3’ => ‘フッタ3’,
‘foot4’ => ‘フッタ4’,
‘foot5’ => ‘フッタ5’,
‘foot6’ => ‘フッタ6’,
‘foot7’ => ‘フッタ7’,
‘foot8’ => ‘フッタ8’,
‘foot9’ => ‘そのほかフッタ’,
) );