App Management Shared Service Proxy is not installed - SharePoint WorkFlow 2013

Users report the following error message when trying to publish their 2013 workflows:

Errors were found when compiling the workflow.  The workflow files were saved but cannot be run.

Solution

1. Log in to SharePoint 2013 farm server using the Administation user setup account.
2. Start Central Administration.
3. Navigate to: Application Management > Service Applications > Manage service applications.
4. On the Service Applications ribbon, click the New button, and then select App Management Service.
5. Enter configuration information as appropriate.
6. Click OK. Though the service application and service application proxy are started, the App Management service itself must still be started.
7. Navigate to: Application Management > Service Applications > Manage services on server.  Start the service.