The add assistance parameters tool automatically generates some project parameters.
You can view these parameters via following window in Revit :
...
Mark a Revit element as end unit
If the information that an element represents an end unit lacks or if you want to ‘force' a component to be interpreted as an end unit by the Hysopt BIM Syncer, you can mark components as end units using the project parameter Hysopt - Generate as End Unit
by putting “1”.
...
Application (for Hysopt) parameter
Since Revit has no way of indicating if a piping system is applied in a heating system, cooling system or changeover, the “Add Assistance Parameters” automatically adds an extra project parameter Hysopt - Application
for piping systems to the model. The software interpretes the piping system by default as a heating system. You can indicate the type of application by putting one of following numbers:
Heating system
Cooling System
Changeover
This allows the user to define the application on the piping system.
...