For that, you need to be registered as REP with PMI. Only registered education providers can provide accepted hours required for the exam or maintain PDU. However, to train others for the PMP exam without providing hours to train you really don't have to be certified in PMP.
You can train new practitioners and candidates and they can still submit the contact hours for this PMP training but it is up to PMI whether they will approve those hours or not. If you are a REP then your hours will be approved automatically, that's the only difference.
Hope this helps!
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