Here you can see a list of all currently defined checkout process steps. You can create a new step by clicking the New step button and you can also Edit () or Delete () the existing steps or change their succession (), (). Besides, you can generate a default process using the Generate default process button or you can generate the process from global settings using the Generate from global process button. However, in both these cases, your current process will be lost.
In the four right columns of the list you can see if the particular step is displayed (Yes) or not (No) in the given section of the CMS.
Further information about the checkout process can be found in E-commerce Guide -> Configuring your store -> Checkout process.