Red ones are for the PF Source 01 event
Green ones are for Event 01
Yellow ones are for Event 02
In the operators Shape Instance you have to assign a geometry present in the scene so press "none" and select the Box01 object.
In the Position Object, Speed by Surface and Lock/Bond operators you have to assign a geometry present in the scene so press "Add" and select the Cylinder01 object for each operator.
We can leave the Material Frequency operator as in the figure for now, we will set a good material later.
Once all these settings are done your system is ready to run.
The main logic of this system works with the Speed by Surface operator that takes the information from the geometry normals and use it to give a speed and direction to the particles, putting a very low speed parameter with the SetSpeed Once optin we have te impression that the particles don't move.