Currently Lens Studio doesn't offer the ability to directly change the pivot / anchor point of a model. Instead, you would need to do this in a 3D tool like Maya, Blender, etc.
That said, there is a trick you can utilize to adjust within Lens Studio:
- Create an empty object.
- Drag your model to be a child of the empty object.
- Offset your model (the child) so that the parent object's position aligns with where you want the pivot / anchor to be. To help, you can add a mesh visual / box to the parent object to see a visual representation of where this point is.
- Move / rotate / scale the parent object as needed.