Delivery and payment filter for Shop-Script

1. Open the admin page of your website.
2. Open Shop - Storefront - Templates - checkout.shipping.html.
3. Find the code: {foreach $checkout_shipping_methods as $m}
4. Insert before it:
   
   {$checkout_shipping_methods = shopDelpayfilterPlugin::filterDeliveryMethods($checkout_shipping_methods)}
5. Open Shop - Storefront - Templates - checkout.payment.html.
6. Find the code: {foreach $checkout_payment_methods as $m}
7. Insert before it:
   
   {$checkout_payment_methods = shopDelpayfilterPlugin::filterPaymentMethods($checkout_payment_methods)}

If You are using a plugin that displays cart and pages on one page, You need to make the same changes to plugin templates.