Manual selection

This modifier lets the user manually select particles in the viewports using the mouse courser, overwriting any previously defined particle selection.

Two input modes are available to select particles: The Pick particles mode allows you to toggle the selection status of individual particles. With the Fence selection mode, you can draw a closed fence around a group of particles in the viewports using the mouse. All particles within the polygonal path will be selected. Hold down the Ctrl key (Command on Mac) to add particles to an existing selection. The Alt key can be used to remove particles from an existing selection.