How to create subordinate reporting through Matrix model?

I would like to create a subordinate report from:



Function Tree object (select a function)

  |

Matrix Model relationship ( to find a dependent BPMN Task)

  |

BPMN Collaboration Diagram object (to find a lower level dependent task)

  |

BPMN Process Diagram Object (possibly identify a dependent IT Service)

  |

(maybe more decomposition for services, etc.)



What is a way to discover subordiate relationships from a Function Tree to BPMN tasks with matrix in the middle? I realize that the matrix is a definition only whereas the Model is an occurrence.



Thanks for any tips.

MR