The BIM Feeder is fully operational as soon as you “link“ a Hysopt model with a Revit model.
In the P&ID window, open the Hysopt model that corresonds to the Revit model that you opened in Revit
Press the “link“ button to link the Hysopt model and the Revit model
Save the Revit model
As with all modifications that you do within a Revit model, the link will be persisted as soon as you explicitely save the changes to your Revit model