Multiple Vesting Schedules in a 401(k) Plan

Is it possible to have two separate vesting schedules in one plan? I have a client that is considering removing SH, however they have a union group entitled to a certain match %. Due to permissive aggregation, we believe the union group can continue their same matching formula and vesting at 100%. However, for anyone nonunion moving to a discretionary match, is it possible to have a separate vesting schedule? 

Generally each vesting schedule is a benefit, right, or feature that would be subject to coverage testing.  So you may have it, if you pass.  (And consider how union employees typically are considered in coverage testing)

18 hours ago, RetirementGal86 said:

permissive aggregation, we believe the union group

Mandatory disaggregation, so having separate vesting schedules for union/non-union should not present any BRF issues.