Just add the component and set the desired rotation, done, the rest is just fancy stuff you don’t need nor want.
If you’re using the default UE4 Skysphere BP you have to make the actual sphere mesh the root component, not the dummy sphere component which is the root by default(It won’t work for some reason.).
Besides that, you can simply delete the sphere component as it has no effect on the skysphere(I didn’t notice any at least.)