You can change the position of your model in the drawing pane by using the Pan tool.

To use the Pan tool:

1. Click View > Pan.
2. The mouse cursor changes to the Pan icon.
3. Click anywhere in the drawing, hold down the mouse button and move the mouse to reposition the current view.

or

If your mouse is equipped with a mousewheel, you can pan by simply holding down the mousewheel and moving the mouse to reposition the current view.

or

Select View > Pan, then click anywhere in the drawing, hold down the mouse button and move the mouse to reposition the current view