Hello Rob,

I believe you can use the following PHP code snippet for that:

add_filter('b2bking_minmax_order_total_calculation_basis', function($value){
    $cart = WC()->cart->get_cart();
    $product_id_to_exclude = 1234;
    
    $has_another_item = false;
    foreach ($cart as $cart_item_key => $cart_item) {
        if ($cart_item['product_id'] == $product_id_to_exclude || $cart_item['variation_id'] == $product_id_to_exclude) {
            // this item
        } else {
            $has_another_item = true;
        }
    }
    if ( ! $has_another_item ){
        $value = 99999999;
    }
    return $value;
}, 10, 1);

Replace 1234 with the ID of the product.

It should allow ordering that product regardless of MOQ.

Kind regards,

Thomas