how to make access of a portal role dependent on a ivew

Hi All,

I have to implement a scenario where one role created in portal. it has been assigned to a group of users.

whenever a user access the role in portal >> a webdynpro abap ivew should be called >> user submits the form in the ivew application>> then only the rest ivews of the role should be accessible to the user.

kindly help me to implement the scenario.