How can the Major System help you build a number PAO (00–99)?
Derive each number's Person from its Major-System sounds — the two digits give consonants that suggest an initials/person.

* Each digit's consonant sounds — the raw material for deriving a number's Person. — Pedros.lol, CC BY-SA 3.0, via Wikimedia Commons. *
For a 00–99 PAO, don't invent 100 people from thin air — let the digits generate them. Since each 2-digit number already maps to consonant sounds (e.g. 15 → t·l), pick a person whose name fits those sounds. This ties the number, its Major-System word, and its Person together, so they reinforce each other and the Person is derivable from the number rather than separately memorised.
Tip: This is why people often learn the Major System first — it seeds the number PAO.
Go deeper:
Mnemonic major system (Wikipedia) — the full digit-to-consonant table.
How the Major seeds pegs (Wikipedia) — where the Major System sits between sounds and PAO.