Changing Desired Rotation

I want to use Desired Rotation to rotate so that the creature I’m rotating can rotate smoothly rather than rotating based on tick rate (causing jittering and desync). However, I have no idea how to access Desired Rotation as it seems BPModify Desired Rotation does nothing. I’ve tried using straight Set Actor Rotation, Add Local Rotation, tried increasing tick rates of events… I just want to rotate an actor smoothly, as actors seem to do when the player provides them a rotation input.

Does anyone know how to change Desired Rotation, or have another idea of how to aim a flyer not using the player’s camera rotation, thanks in advance for any answer!