Main toolbar > Tool Palettes button > Right-click over an empty area in a palette.
Right-clicking on an empty area on any palette in the Tool Palettes Set displays a menu containing options for displaying and adding tools, text, and separators. It also has options for deleting and renaming the active palette, and accessing the Palette Properties dialog.
Note: The right-click menu for the Scene–In Use and Scene–Unused palettes contains a subset of menu options that are available for other palettes.
View Options—Click to display the View Options dialog where you can set the palette's tool size and text display.
Sort By—Allows you to sort tools and text by name or by type.
Paste—Pastes a tool to the active palette.
Add Text—Displays a text field where you can enter text onto unused spaced on a palette. Press ENTER to accept the text. Right-click over the text to display a menu that allows you to either remove or copy the text to the Clipboard, delete the text or edit (rename) it.
Add Separator—Creates a horizontal line that separates lines of text, and is useful for organizing areas on the palette.
Delete Palette—Click to delete the active palette. A warning dialog confirms if you want to permanently delete the palette and reminds you to export it to an external file if you want to save it.
Note: You can export the palette from the Tool Palettes Panel in the Customize User Interface dialog.
Note: Deleting a tool palette from the Tool Palettes Set does not permanently remove it from the Tool Palettes panel.
Rename Palette—Click to rename the active palette. A text field displays where you can enter a new name. Press ENTER to accept it.
Properties—Displays the Palette Properties dialog that contains information about the active palette.
Note: 
You can also click the Properties button at the bottom of the title bar to open the Palette Properties dialog.