Using the Optimize palette (ImageReady)
You use the Optimize palette to select optimization options. This palette corresponds to the Optimize panel in the Photoshop Save for Web dialog box.
Displaying the Optimize palette
Choose Window > Optimize. To show all the optimization options, click the Show Options control 
on the Optimize palette tab, or choose Show Options from the Optimize palette menu. To display one set of options, click the Show Options control 
for that set of options.
Using the Optimize palette menu
Click the triangle 
in the upper right corner of the palette to display the menu.