Some functions in Pachyderm will run with only a source in the room (such as the particle renderer). Some require a receiver. This article will tell you how to place them in your model.

Placing source and receiver objects in the model is simple. To place a source, type in the command Insert_Source. For a receiver, type the command Insert_Receiver.  The interface will ask you to specify a location. Either type in the 3-dimensional coordinates of the desired location, or click in the desired location in the viewport. 

The resulting source or receiver object  can be moved and copied in similar ways to those a point object can. (i.e. the move command, click and drag, etc.)