Setting Service Properties in Workbench
From fmepedia
What are Workspace Level Service Properties
FME Server services includes properties used by entire service and properties set by workspace. Here we discuss workspace level service properties. For the purpose of this article we will use the property Desired Output Writer as an example of a workspace level property that might be used with the Data Download service.
Imagine the following scenario: You have a workspace that includes two writers, one writer inserts a single record with a date stamp into an Oracle table every time the workspace is run. You might do this to keep a record of any job run in your FME Server. The workspace also includes an AutoCAD writer that lets users download the actual data they want in AutoCAD (more often this will be a Generic writer letting end-users choose the format the want). In this example clearly the Oracle writer is not providing data for download and the AutoCAD writer is. When you publish the workspace you need to tell the Data Download service that only the AutoCAD writer is providing data for download, even though the Oracle writer still needs to be run.
How Does it Work
When publishing the workspace the last screen asks you to choose the service or services to register the workspace with. You will see an Edit button next to each service.

By clicking on this edit button you will see an properties that can set for this service. The property Desired Output Writer lets you select the AutoCAD writer in this example.

