First, go to Admin > Config > Email Notifications and check that staff member is listed against the correct area (e.g. Accident Log).
If the staff member's name is not in the 'Users to be Notified' box, you will need to enter it here and ensure 'Send Details' is toggled to 'Yes', then click 'Save'. You can remove a name by clicking on the X if that staff member no longer needs to receive the notifications.
The staff member will need to have a primary email address entered on their staff profile (in the Personal Details field), otherwise their name is not availalble to select in the Email Notifications area. This means a staff profile on ScholarPack is also required. Go to Admin > Personnel > Staff, enter the member of staff's name and check that their email is present and correct on their staff profile.
If it is an Accident/First Aid incident email that has not been received, check the entry on the student/staff/guest accident log. The 'Send Email Notification' box is set to Yes automatically, but it may have been toggled to 'No' for this particular entry.