This is the default screen (or something like it) when you click on the ‘Alert Configuration’ link in your WHMCS Notify Extended addon.
By default, all departments will be unchecked, and will not send ‘nag’ alerts. It’s up to you to check the ones that you feel are important enough to be ‘nagged’ about on a continual basis.
It should be noted that there is no ‘submit’ button, and none is needed. As you check each of these, the department will be automatically set to nag as needed