Need to create one or more layout slots(Links), where each layout slots has to uniquely represent each work item type

Hi,
     I have a use case, where I need to create separate layout slots (Links), Where each layout slots (Links) has to uniquely represent the workitems of specific workitem type.

eg:
Create a tab with 'Link  Layout' and create two sections.
Section 1 - Title : 'Task reference' , Slot: 'Links'
      Presentation - Need to have provision for only adding, editing and removing work item type - Task
Section 2 - Tile : 'Defect reference', Slot: 'Links'
      Presentation - Need to have provision for only adding, editing and removing work item type - Defect.

For doing this activity, Do I have to extend any of the existing java API's related non-attribute presentation - links/references and modify the filter type of that to display only the specific item.

Note: Took Clear Quest tool as a reference. Where we have this provision of adding record types separately to a record(separate area for each record type under a tab).

Couldn't find much help about this. Kindly suggest me some solutions.

Thanks.