Set Option: Releasedef type attribute
Specifies whether component tasks are created by default when a new baseline is created for a release. This option can be overridden by the corresponding setting on the individual release.
If the value is TRUE, component tasks are created for new baselines; if the value is FALSE, they are not. The default value for this attribute is TRUE.
To override this setting on an individual release, see the Modifying a release.