Activate the command: 
Application Menu 
Options Mouse Options tab, or 
Tools Options Application Options Mouse Options tab.
The Mouse Options tab can be used to customize the view manipulation controls of the mouse. Several templates are provided that match all the CAD programs for which Autodesk Simulation provides support. In addition a template for the Autodesk Simulation defaults are provided. Selecting one of these templates will cause the controls to appear in the two sections below. None of the templates provided can be deleted or modified. You can create a new template by pressing the Add Template button. After you specify a name for the new template, you will be able to select which direction the mouse must be moved to zoom in on the model and what occurs when you press the middle mouse button in while holding down one of the modifier keys in the two sections below. The controls in a user-defined template can be modified at any time by selecting the template in the list and changing the controls.