Once you have installed Store Pickup + Delivery on your BigCommerce store and configured your rates, you will need to enable them. This guide demonstrates how to do just that.
Within your BigCommerce admin panel click Store Setup
Then click Shipping
Click the Configure button next to your shipping zone
Scroll down the page and locate the Store Pickup + Delivery carrier service
Click the toggle to activate the carrier service
Within the pop-up window that appears change the words "Store Pickup + Delivery" to your stores name and click Submit
Finally click Done at the bottom of the screen