Yes, you can use button set up to turn the field or fields in the portal row into a button. Clicking that button can perform a script that either finds that record or links to that record in order to then display the details in the body of the layout.
Thanks for the response. I may need a little more hand holding though. Is there a tutorial out there? or maybe some search terms I could use with Google. I've tried searching for this, but come up empty.
You start with a self join relationship as needed for your portal:
Where both are Tutorial: What are Table Occurrences? of the same data source table. The relationship can be whatever produces the desired list of records in your portal. You can use the X operator instead of = to show all records in the portal. I will assume that there is a field that serves as a primary key (Unique identifier for every record in the table) which I will refer to as __pkPrimaryKey.
Scripted find method:
Set Variable [$ID ; value: PortalOccurrence::__pkPrimaryKey ]
Enter Find Mode 
Set Field [LayoutOccurrence::__pkPrimaryKey ; $ID ]
Go To Related Records Method:
Go To Related Record [Show only related records; From table: PortalOccurrence; Using layout: <Current Layout> ]
Define an additional relationship:
LayoutOccurrence::SelectedRecord = SelectedOccurrence::__pkPrimaryKey
Set Field [LayoutOccurrence::SelectedRecord ; PortalOccurrence::__pkPrimaryKey ]
//If screen does not update instantly, add this step:
Add the fields you want to show this deatil info from SelectedOccurrence
For an explanation of the notation that I am using, see the first post of: Common Forum Relationship and Field Notations Explained
I'm revisiting this and trying to wrap my head around this, but my head isn't cooperating.
I have a relationship of Clients----<Policies
I have a layout showing records from the Clients table, with a portal in it showing all related Policies. What im wanting to be able to do is click on a row in the portal, and have the data from that selected policy displayed below.
What im having an issue understanding is: