I will quote legalfalcon here-
1. R10
-----Criminality and Medicals are done immediately after the R10. While meds are cleared by Health Canada, Criminality is passed based on the PCCs at the CIO.
2. Eligibility - In two stages - Program analyst and then the final review by the agent.
3. Security - The security starts immediately after the eligibility is recommended passed. So if the applicant is outland, by the time the application is transferred to LVO, the security is done, given that there is no travel history, government jobs and other factors which may delay the process.
So concluding from this PCC and POF are checked somewhere between IP1 and IP2, i.e mostly when our background is in NA stage after IP1.