Hi @Shubhanshi ,
The easiest way to find out is the openstudio Application as @ZhengrongTao has pointed out.
It has a really useful UI in which all parts of the system are visible. The template systems used in Honeybee are written by Mathew Dahlhausen from NREL. These templates are very detailed and you have to be very careful with them. You can find more information on this forum like here: