Especially during ECQ, MECQ, and GCQ — actually through all Community Quarantine classifications, knowing who are APOR gets access to certain freedoms in movement.
2021 PNP Chief Gen. Guillermo Eleazar posted the following through his official facebook page.
1. Video with himself narrating the different kinds of APOR categorized as Workforce APOR, Consumer APOR, and Other APOR.
2. Graphic posted on his timeline showing the different kinds of APOR.

More references on APOR with IATF Resolution references at:
Who are the latest APOR and what are the latest Travel Protocols?