Part Modeling > UDFs and Groups > Placing a UDF > To Place a UDF Using Reference Mapping
  
To Place a UDF Using Reference Mapping
1. Create a UDF.
2. Click Model > User-Defined Feature. The Open dialog box opens.
3. Select a UDF group file and click Open. The Insert User-Defined Feature dialog box opens. Click one of the following:
Make features dependent on dimensions of UDF—Toggle the dependency of the copied group on changes to feature dimensions specified in the UDF file.
Advanced reference configuration—Place the UDF group by mapping references. Clear this check box to manually define feature placement using the feature redefinition interface. Each feature in the group is redefined.
View source model—Retrieve and display the UDF source (reference) model in a separate window.
4. Click OK. The User Defined Feature Placement dialog box opens to the Placement tab.
5. Select a reference from the References of Original Features list. The reference is highlighted in the reference model window.
6. Select a matching reference for the user-defined feature from the Model Tree or graphics window. The selected item appears in the reference collector.
7. Repeat steps 5 and 6 for all the references on the References of Original Features list.   
8. Click to accept the orientation and place the UDF or click the Adjustments tab to change the UDF orientation.
9. On the Adjustments tab select the features orientation direction and click Flip or Next to change the UDF placement orientation.
10. Click to accept the orientation and place the UDF.
 
* If the regeneration fails during the initial preview, only the successfully regenerated features are displayed. You can change feature orientations and update the preview display to attempt resolving the failure. Alternatively, you can return to the User Defined Feature Placement dialog box to change the placement references.