Rotates the specified entity around its yaw axis in function of the specified movement input and speed property.
This action should usually be placed in an input Event suchs as FingerRelativeMove or GameCtrlStick. If the action is not in an input event it'll assume an input of "1", that is it'll directly apply the specified speed every time the action is updated.
Yaw axis means around its local Y axis (the green axis with the gizmo in local mode). That is usually what you'd consider "looking left/right".