this has probably been asked before but I'm just confusing myself at the moment so i though id ask for the help

i've got the PdMtlAbstractions zip that I'm wanting to add to vershion 0.40.3-extended on OSX. I'm looking around the application but not sure what to do, is it just dropping it in the plugins file? a point in the right direction or a baby steps guide would help out loads...