Hello Chuan,
There are a couple of training videos that PTC has that may be helpful. I recently used them to set up my Windchill-Schematic interface. Find them at PTC.com under Training, Free Tutorials, PTC Creo Schematics, “How to Install the Unified Workgroup Manager for Creo Schematics” and “Working with Schematics in Windchill”. You may need to set up an account if you don’t already have one. Hope this helps.
Here are the links:
http://learningexchange.ptc.com/tutorial/2953/working-with-schematics-designs-in-windchill