Interface > Validating Import > To Use Alternate or Calculated Mass Properties
  
To Use Alternate or Calculated Mass Properties
1. Import a part or assembly model or open the model in Creo that belongs to a file format that Creo Unite supports.
2. Right-click a part or component model on the Model Tree and click Parameters or click Tools > Parameters. The Parameters dialog box opens.
3. Select Alternate mass properties in the drop-down list next to Properties at the bottom of the Parameters dialog box.
4. To designate the alternate mass property value for a parameter, select the check box for the parameter in the Designate column and click OK.
5. Right-click the model on the Model Tree and click Import Validation > Use Alternate Mass Properties.
 
* If the model is already designated the alternate mass properties, the Use Calculated Mass Properties option is available.