This Article explains how to combine two columns with First Name and Last Name separately into one attribute from inside of Strategy.
To create an attribute form that allows the attribute to display a name in the format of 'Last_Name, First_Name' in Strategy 10.x, open the Attribute Editor for the desired attribute and create a new form with the following syntax in the Form Expression section:
ApplySimple("#0 ',' #1", ,)
NOTE: The ' ' in the above syntax is the Oracle-specific syntax used to concatenate strings. For this to work in other database platforms, replace the ' ' with the syntax for the specific database.

The resulting report appears as follows:
