Add this code to your child theme’s functions.php file:

add_action( 'add_meta_boxes' , 'wpdocs_remove_post_custom_fields', 10 );
function wpdocs_remove_post_custom_fields() {
	//Assign to metabox
    remove_meta_box( 'wpcargo_shipment_designation' , 'wpcargo_shipment' , 'side' ); 
	
	//History metabox
	remove_meta_box( 'wpcargo_shipment_history' , 'wpcargo_shipment', 'advanced' );
}

SHIPMENT HISTORY SECTION

ASSIGN SHIPMENT TO SECTION