Using the button bar in Automatic Local Matching you can switch the view between Group By PCN (default view), Group By IPN and Group By Assembly.
Group by IPN:
The matching results are grouped by IPN. The plus symbol displays all PCN for which there are matches with the internal part number (IPN).
Under # PCN you find the number of PCN matching the IPN. These PCN can be expanded with a click on the next plus symbol.
The benefit of this view is that you can find PCN based on your internal part number.
Group by Assembly:
Here the PCN are grouped by assemblies. The plus symbol displays all PCN for which there are matches with the assembly.
Under # PCN you find the number of PCN matching the assembly. These PCN can be expanded with a click on the next plus symbol.
The benefit of this view is that you get all PCN displayed that concern a specific assembly.