-start/load a scene and goto Edit Mode
-inside Scene Plugins, add new plugin and load
MacGruber_PostMagic.cslist (from MacGruber.PostMagic.3)
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--optional for PostMagic.DepthOfField
--add
Empty atom and rename it to
AutoFocusPoint
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Make sure you installed it correctly (inside AddonsPackages).If you still can't find it...than it's something wrong on your end (with your client).
EDIT: If everything works (following this quick 10 steps), enable and play around with settings inside scene plugins.