Animation can be achieved in one of 3 ways:
1. The mesh can be animated inside the modeling application ( long way )
2. Through the use of the lua script entity.setRotation(entity_ID, x, y, z) see the Scripting API
https://api.aurasoft-skyline.co.uk/index.html Note: the API can be accessed from inside Skyline from the Help menu.
3. And finally the quickest way is via the use of the Rotate Action. See the Toxic knot demo for an example of the rotation action. I will write a quick tutorial on how to rotate an object via actions.