On the EMI and Rectification dialog,
User can disable or enable Differential Inductor and X-capacitor. X-Capacitor can be Disabled only if Common-Mode Choke is None.
Common-Mode Choke section:
User can choose what type of Common-Mode Choke to use (None, Single or Tandem). Click on the calculator icon 
and select your preferred mode.
To change a component, select the component and click on the down arrow to the right of the calculator icon 
and select Change. From the opened database, select the appropriate component and click OK.
Bridge Rectifier section:
User can choose Bridge Rectifier type (Package or Discreet) and change Input Rectifier Diode.
Bulk Capacitor section:
User can select Bulk Rectifier mode (Single, Tandem or Pi-Filter) and change bulk capacitor.