You might get better response posting this question in the Business Intelligence Suite Enterprise Edition space
Additionally have you reviewed
Check the Oracle by Example section
There are a number of videos on YouTube. Search for OBIEE or Oracle BI
You might also consider a class in OBIEE
The Oracle By Example has a series of tutorials that will get you a very basic understanding. Designing dashboards is a process that requires you to understand both Data Visualization practices and knowledge of the tool you are working with.
Please review the following
Oracle BI Analytics and Dashboards 11g
i went through all the documents that you have shared again and still didnt find what i want
what i want is to make the upper tab has several dashbaords like this
part dahboard B and dashboard C only
is it doable ?