Only when you assign the desktop to a service and then assign the service to an agent. The agent will be able to access the designer desktop. 

To assign a designer desktop to a service:

  1. Navigate to Configure > Services and then click Services.
    The Services window appears.

    Note: All the available services appear in the Services window.

  2. Double-click and open the services for which you want to assign the desktop you just created.
    The Edit Services <opened service name and service ID> appears.
  3. Click the Settings tab.
  4. In the Settings tab, in the Agent Desktop field, select the desktop from the drop-down list.
  5. Click Save.

The desktop is now assigned to a service.