In the CATIA there are wokbenches.
1. You need to decide the workbench you add or you want to create new worbench.
If you want to add to existing workbench => You use “Add-ins”
you create your own workbench ( you cannot create your own workshop – collection of workbench or your own doucment like CATPart or CATAssembly )
To create you Add-In. you use