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add_filter( 'woocommerce_dynamic_pricing_is_cumulative', 'wcdp_cumulative_pricing', 10, 2 );
function wcdp_cumulative_pricing( $cumulative, $module_id ) {
	if ( $module_id == 'advanced_category' || $module_id == 'simple_membership' ) {
		$cumulative = true;
	}
	
	return $cumulative;
}

add_filter('wc_dynamic_pricing_load_modules', 'custom_dynamic_pricing_module_order');
function custom_dynamic_pricing_module_order($modules) {
	$modules = array();
	//Need to have advanced category first. 
	$modules['advanced_category'] = WC_Dynamic_Pricing_Advanced_Category::instance();
	$modules['simple_membership'] = WC_Dynamic_Pricing_Simple_Membership::instance();
	
	$modules['simple_product'] = WC_Dynamic_Pricing_Simple_Product::instance();
	$modules['simple_category'] = WC_Dynamic_Pricing_Simple_Category::instance();
	$modules['advanced_product'] = WC_Dynamic_Pricing_Advanced_Product::instance();
	$modules['advanced_totals'] = WC_Dynamic_Pricing_Advanced_Totals::instance();

	return $modules;
}