Data Management Capabilities > Managing Configurable Products > Developing Advanced Selection Logic for Configurable Modules > Examples and Best Practices for Advanced Selection Logic > Selecting Options for a Configurable Module > Enabling a Single Option Based on a Yes/No Response
  
Enabling a Single Option Based on a Yes/No Response
In many situations, you may want to enable or disable a single option based on a user response to a yes/no question. For example, you may want to determine whether the user wants a particular option package.
To enable a single feature based on a yes/no user response:
1. Create a configurable module.
2. Attach a child part that represents the relevant option.
3. Add a boolean input parameter to the configurable module.
4. Define an appropriate prompt value for this parameter.
5. Add this boolean parameter to the Inclusion Option of this configurable module for the child part.
The following figure shows an example of this technique where the HardDriveGP and DVDROMDrive are or are not included by the value of the boolean parameters secondHardDrive and needDVDROMDrive, respectively.