Access the Context Menu
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Click the Sets tool.
Figure 1. 
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From the Set panel, right-click anywhere within the Sets list.
The context menu is displayed.
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Click on one of the available options.
Options Actions Delete Deletes the selected set(s) from the list. Rename Displays the Rename dialog, which allows you to rename the selected set. Show Displays the selected set(s) in the modeling window and activates the corresponding check box(s). Hide Hides the selected set(s) in the modeling window and deactivates the corresponding check box(s).