Render
Replaces each particle with a predefined simple shape, which you can select in the operation controls toolbar or parameter editor.
This tool is useful for replacing particles with simple shapes such as: spheres, disks, lines, tubes, capped tubes, or rounded tubes.
Using Render
Click the
Render button on the Drive Particles tab.Click
the 
particle system you want to be affected and press Enter to confirm your selection.Choose the shape you want the particles to be replaced with in the drop-down menu on the operation controls toolbar or parameter editor.
For specific parameter help see the Render node help.