Here you can change or add new subscribers to the selected subscription group. The options in the bottom menu are:
Add - this option allows you to add a new subscriber (e-mail address).
Edit - this option allows you to edit a selected e-mail address.
Disable - this button disables or enables a selected subscriber. When disabled the subscriber will not receive newsletters sent to his subscription group.
Delete - this option deletes the selected subscriber.
Cancel - you will go back to the subscription list.