When using Theme Blvd Framework 2.5+ theme and WooCommerce, change number of related product columns (i.e. up-sells on single product pages).

functions.php

<?php
/**
 * Change number of related product columns
 * on single product pages.
 */
function my_up_sell_args( $args ) {

	themeblvd_set_att( 'woo_product_columns', 2 );

	return $args; // Pass $args through untouched.
}
add_filter( 'themeblvd_woocommerce_up_sell_args', 'my_up_sell_args' );