Setting Transparency with the Transparency Tool
You can use the Transparency tool in either of two ways:
You can select it from the Format Toolbar.
You can display the Transparency panel if you want to make multiple changes. To do so, select View>Panels>Transparency.
To set transparency with the Transparency tool:
Select the item you want to alter.
Select the Transparency tool and:
Select a value from Opaque to Transparent or
Click More for the ability to enter a value directly.
To set transparency with the Transparency panel:
Select the item you want to alter.
Display the Transparency panel.
Move the slider to the desired transparency level.