To customize the Object Palette list, please follow the steps below:
1. In your Object Palette window, Right click in the Owner schema drop-down name and select "Customize".
2. Now in the Schema Categories tab, you'll see the available schemas.
3. Select all the schema that you don't want to see and click on the Right arrow to add them to the right side.
4. Now on the right side for each schema, in the Category column, you can change from Favorite schema to Hidden schema.
5. Once done, hit OK and this should hide those schemas.
