For that, you need to be registered as REP with PMI only registered education provider can provide accepted hours required for the exam or maintain PDU
But to teach others for the PMP exam without providing hours to train you really don't have to be PMP.
You can train new practitioners and candidates and they can still submit the contact hours for this 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.