Copying and deleting particle settings

I am working on an explosion using cell fractures. I decided to add small parcticles to some of the cell fractures but when I use the copy addon it adds the modifiers to the selected cells but it does not add the right particle settings, using default settings and not the settings from the master cell. I am unable to overwrite the wrong settings so I want to delete all the the particles in a group but I cannot find anyyway to do this.
Can anyone help with this please?

For copying settings from one to many elements, a very excellent french men called Manu suggested that I selected my group and use Ctrl L and use modifier. That deployed the settings across the group. Thank you Manu.