Your bundle setup is where you lay the foundations of your bundle. This includes deciding what your bundle is called, which bundle type you use, and how your bundle is laid out on the page. To set this:
Go to Bundles.
Select the bundle that you would like to edit.
The first step is to name your bundle, by going to Bundles > Setup, and scrolling to Bundle details.
The Bundle name is not visible to your customers; it is only visible on your Shopify dashboard.
The Product name is visible to your customers; this is the name of the bundle product as it reads at the checkout (and in email notifications).
It's important to choose which bundle type suits your needs before you create a bundle - this is because once the bundle has been created, you will not be able to change its bundle type at a later date.
This is what you would see if you had not completed Multiple SKU Bundle installation.
Simply select the right option for you by heading to Bundle type. You will see a warning message if Multiple SKU Bundle installation is incomplete, but this will not stop you from creating Single SKU Bundles.