All:
I have the following data (see Raw Data attachment). Inside my SSRS Report, I have a column for "Name / Stream / Offer One / Offer Two" (Name is the column for the "Value" column shown in the image).
I need my SSRS Report to display one row of the "totals" for each Name. Then under this, I need a row for each Stream associated with the Name that displays the values for that stream.
For the SSRS Output (please see second screen shot). The data loads into my tablix, but I need one row for "BAG-CV" that displays the total for that Name. Then under this row, I need a row for "AR" stream with the data for.
If you see Name: JAC-FL, it has 5 streams listed under it. So I would need one row for the total of JAC-FL, then 5 rows under it listing all the streams associated with this name.
Hopefully this makes sense.
The concept that you are describing is a nested parent/child group (two levels of grouping in a single table). This is quite easy to do and I'll walk you through the steps for your particular scenario thanks to the helpful description and screenshots that you posted.
Screenshot #2:
Add Fields: Add the additional fields to your table, ensuring that the middle row is using SUM aggregation as per the screenshot:
Results: You should see the additional header row on the parent group with the desired SUM.
PS. I realize you probably aren't in control of the database schema, but wow, exclamation marks in column names would drive me up the wall :)