This FAQ is intended for the Employee & Manager User Roles. What is a User Role? 
If your organization has manager approvals configured, some tickets may require approval from your line manager.
Once the ticket has been submitted, your manager will receive an email notification with the details of the order and the option to 'Approve' or 'Decline' the order.
The approval decision will be emailed to you automatically once your manager has submitted their decision.
Administrators can learn more about Manager Approvals configuration in this help article: 'Ticket Approvals '.