You cannot edit build options defined in the Run Build wizard, because they are not saved with the build job. You can edit build options defined in a build configuration, build area, or build target.
To edit a build option:
Locate the build option you want to modify.
Make sure the build configuration containing the build option is checked out.
Select the build area, build configuration, or target. The Build Options section appears on the right side of the screen.
Click the name of the build option. The Edit Build Option dialog box appears.
Make the desired edits to the build option, then click OK. A brief confirmation dialog appears, and the edited build option appears in the Build Options section.