wjpm-rp4wp.php

function wpjm_rp4wp_add_meta_fields( $meta_fields, $post_id, $post ) {
	if ( 'post' == $post->post_type ) {
		$meta_fields = array( 'wpjm_company' );
	}

	return $meta_fields;
}

add_filter( 'rp4wp_related_meta_fields', 'wpjm_rp4wp_add_meta_fields', 10, 3 );

function wpjm_change_weight( $weight, $post, $meta_field ) {
	if ( 'post' == $post->post_type ) {
		$weight = 100;
	}

	return $weight;
}

add_filter( 'rp4wp_related_meta_fields_weight', 'wpjm_change_weight', 10, 3 );