At this point in time Podio does not have these types of fine-grained
user access control or ability to implement business logic like what
fields should be displayed. As you can imagine it's very difficult to
create a system that does not introduce large amounts of complexity,
and this type of integration is really best done by writing a
presentation layer on top of Podio using the API where you can
implement all of your own rules and permissions..
Best,
Nick