Advanced Customization > Business Logic Customization > Options and Variants > Customizing Options and Variants > Windchill Option Set Delegate Framework Customizations
  
Windchill Option Set Delegate Framework Customizations
This section describes how you write custom delegate and use the delegate framework.
You can modify the capability provided in Windchill Options and Variants for assignment of option set. Specifically, you can:
Restrict Windchill object to assign option set
Extend option set delegate