Use this section to add and remove
child test plans. Adding a child test plan makes the containing plan
a master test plan. You can use preexisting test plans as children
or create new ones. A child test plan cannot have children of its
own.
When you add child test plans to a master
test plan, you can choose to "roll up" quality objectives.
When enabled, any calculated quality objectives added to the master
will include all child plans in the calculations