Entry Standards are held separate from the A-PD-055-002/PP-001, Canadian Forces Manual of Military Occupational Structure - Occupational Specification
As for the specific entry standards for PAO: It depends on whether you're looking at the ES for:
1) DEO
2) OT, CT (Untrained), SCP
3) CT (Trained)
4) UTP-NCM
5) ROTP
6) CEOTP
7) CFRP
While information from the document can be posted (normally the preference is that someone in Recruiting post the information); posting the document itself, speaking as an ISSO, should not be done. The document is owned by DGPR and although the document itself is Unclassified, the only person/agency authorized to post the PDF in it's entirety is the owner.