There is no built-in smooth rotation (not in the same way as SetFocus is working), but it’s not complex to implement:
- Instead of Set Focus, just save the target location in a variable
- In a tick, calculate the desired rotation from your location and target location
- use the RInterpTo node for smooth rotation
Here is the good video about how to use this node: WTF Is? Interpolation - RInterp Node in Unreal Engine 4 - YouTube