On the Shopify platform, when installing our application, you can specify exactly where the parcel point or home delivery selector should appear in the shopping process. This can be placed on the cart page or on an intermediate page between the cart and the payment page. No programming knowledge is required for the setup.
For more information, check out Getting started with Shopify.
In the case of a custom-developed system, this depends only on you. Our system is built with an “API first” approach, so you can easily customize all settings.
We offer a lightweight frontend integration process that can help you very easily integrate Delivery Gateway into your e-commerce store: Lightweight frontend integration.
Don't worry, depending on the platform, this added feature will not cause slowdowns or any other unexpected side effects in the operating systems and processes.