The only thing that your PPTO hours will not excuse is a no call/no show, every other situation will be covered as a ZERO POINTS occurrence if you use PPTO.
Clock in 10 minutes or more late or leave 10 minutes before shift ends = .5 points
Call off or complete less than 50% of your shift = 1 point
Call off on a key date = 2 points
No Call/No Show = 2 points
No Call/No Show on a key date = 2 points + 2 points for key date = 4 total points
Good info from @Yo5criq-kin.