To add a Preference to the Preference Registry, you need to edit the file <Windchill>src/wt/prefs/registry/prefRegistry.rbInfo and for the Preference you want to add, add at least:

The format is as follows:

Where /node-name is the name of the node (for example /wt/workflow), /key-name is the name of the key under the node (SortOrder) and % [ ]tag is one of the tags mentioned above (% [ ]DISPLAY_NAME).