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		  From the 
			 Restraints section of the 
			 action bar,
			 click
			 Ball Joint 
			  .Optional:  
  Enter a descriptive 
	 Name. 
   
 
		   Select 
			  geometry supports in the model. 
		   
		  You must apply a ball joint to one or more faces or edges. 
		   
		  To change the center of rotation for the ball joint: 
		   
		  You can move the center of rotation to a selected point, move it
			 to an entered coordinate position, or use the 
			 Robot
			 to reposition it. (If you use the 
			 Robot,
			 select it again in the 
			 context toolbar
			 to return to normal selection. 
		    
			 Right-click the triad glyph on the model, and select one of the positioning tools.
				
			 Set 
  Reference point input
	 mode to 
  Support, and select
  a point on the model or a node-based group that contains a single
  node.
				
			  
		  Click 
			 OK. 
		   
		
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