Please go through this & try it out... Add module tag in the paernt pom, something like
<modules>
<module>../ChildProjec1</module>
<module>../ChildProjec2</module>
<module>../ChildProjec3</module>
</modules>
and add 'parent' tag in the parent POM
<parent>
<relativePath>../ParentProject1/</relativePath>
<groupId>soemthing..</groupId>
<artifactId>soemthing..</artifactId>
<version>1.0.0.0</version>
</parent>
Note all the subtags inside Parent tag will be available to child projects also.
Hope this helps...