checking myrewards, some are on the 20% schedule every 6 months (for 2.5 year for full vest) and some are on the 10% schedule (for 5 year for full vest), and so

checking myrewards, some are on the 20% schedule every 6 months (for 2.5 year for full vest) and some are on the 10% schedule (for 5 year for full vest), and some are on a 5% schedule every 3 months (for 5 year for full vest).