From the main menu select: Utilities → Element rotation
Insert fault data. Fault pitch is computed from slikenlines azimuth and vice-versa. If a rotation axis is provided, rotated fault data (including the sense of slip) are computed.
From the main menu select: Utilities → Slickenlines from Riedel elements.
Insert the fault and the fault-related element attitude, select the Riedel's element type, and both slip direction and sense of slip of the fault will be computed.