Redirect "buy Now With 1-Click" To Checkout Page

Does anyone know how can I redirect "Buy now with 1 click" button to the checkout page?

when user press "Buy now with 1-click" the product should be added to the cart and redirects to the checkout without any delay.

Your comments will be appreciated.

which theme are you using?

Please check

https://marketplace.cs-cart.com/add-ons/customer-experience/buy-now-button.html