thanks for the quick reply. Appriciated.
I’m still struggling 
I load my dragon, I select ‘subtool’ then click ‘append’, then select ‘sphere3D2’ from the startup meshes.
This puts a large sphere into the scene, you can see the dragons nose sticking out of it
, and adds the sphere3D2 to the subtool pallette, below dragon.
I click on scale, and get an action bar across the sphere, however if I now select the end cirle and move it , the dragon scales and not the sphere.
The subtool menu shows the sphere highlighted (the ‘eye’ is brighter)
I’m obviously doing something wrong,
I know I’m being a noob, I’m sorry 
If I select the sphere so that its name is in black on the subtools menu, The dragon dissapears and I can select scale, and scale it, but no acton line appears. However when I then go to move it , I select move, but I just end up dragging verts around on the surface of the sphere.
I have managed to move the dragon around the sphere, I’m just getting myself confused. Still its only day 2!
Is there a tutorial (vid) that shows putting in sub objects and moving them that I could see. Many thanks again for your answer.