In the Transparency palette, you can:
The palette works with a single selected object. The controls in the palette are not available when more than one object is selected.
You can also quickly apply SpriteLayer effects by using the controls in the Properties bar.
Do one of the following:
Options for opacity, transfer mode, scope, and masks appear in the Transparency palette. When an object is selected, the Transparency palette displays the object’s opacity and transfer mode.
Drag the slider or enter a percentage to set the opacity of a selected object.
Set the transparency scope for a selected vector object.
Select a transfer mode. This is the method for blending a color with the background color.
Click to show or hide the mask options.
When a selected object has a channel mask or vector mask, click Edit to edit the mask.
Channel Editing View
Choose Channel to create a channel mask. Choose a vector mask style to create a vector mask. If the object has a mask, the menu shows the type of mask. Choose None to remove the object’s mask.
When a masked object is selected, mask options appear in this area.