When you create a feature, it is automatically included for manufacturing in the current setup of the process plan. Sometimes it’s convenient to exclude a feature from your manufacturing plan without actually deleting the feature. Include In Plan and Exclude from Plan options of the Edit menu toggle the inclusion of the selected feature in the manufacturing plan.
You can use the Process Plan dialog box to select features and setups all at once to make sure that everything is included in the plan to easily correct any oversights you might make with the include and exclude options.