Depending on the situation, screen systems may be susceptible to moiré—for example, between smooth tints of two separation pairs such as cyan-yellow (greens) and magenta-yellow (peach tones).

You can change angles to shift moiré susceptibility from one of these separation pairs to the other.

1. In the Separations and Angles table, select the separation that you want to change, and click Edit.
2. In the Edit Separation dialog box, in the Separation Angle list, select an alternate screen angle for the separation. 
    
3. Click OK.