If you'd like to use the Reporter plug-in to generate a report of only the tools used in a part program you can use this customized report. 

To install this customized Reporter plugin report please follow these steps:
Launch GibbsCAM and go to Plug-Ins-->Misc-->Pathfinder and select Plug-Ins Folder
Double-click the Data folder
Double-click the Report folder
Place the two reporter files in this folder and re-launch GibbsCAM.

You should now have a custom report in the Reporter plugin that will only list the tools used in machining in the part.
Download the files by clicking HERE