Any half competent HR system can keep track of it. I know because part of my job was managing those systems. Setting PTO was simply advancing a digit in a field

Any half competent HR system can keep track of it. I know because part of my job was managing those systems. Setting PTO was simply advancing a digit in a field in a giant HR database. Not exactly rocket science. BTW, senior executives had far more flexibility when it came to PTO, leave, pensions, bonuses, IP, etc. And it was managed in the same system that frontline employees were managed from. It's not about complexity, it's about control.