Project Templates come up when you add a Synergy Project within the ISDE as seen below:
You can access more Synergy Application Projects, by importing them instead. You will find these Application Projects on the Renesas web site on the Tools and Kits page:
Use the Documentation Tab, then check sample codes and then search to get a list of all the example designs. Simply import the Application Project as instructed in the associated Getting Started Guide downloaded with the project files.