In the first step in resolving a complaint or grievance,

a$.$ the supervisor cannot speak with the employee directly in front of the steward

b$.$ the supervisor should listen to the shop steward if the steward does not bring the employee

c$.$ the departmental steward cannot present a grievance to the supervisor in the absence of the aggrieved employee

d$.$ the supervisor should not listen to an aggrieved employee if the employee presents a grievance in the absence of the steward