Notification groups are a list of predefined email addresses that can be used to send mass notifications according to the rules that have been defined.
To add a notification group, click the “plus” button located at the top right of the automation module and select the “Notification Group” option.
A window will then open to edit or modify existing groups (if any) or add a new one. In this case, simply click the add or edit option to view the description fields (group name) and the email addresses of the people who make up that notification group.
Note: After making any edits, be sure to save the changes for them to take effect.