laua element security -- needing help

Fairly new to lawson and laua, so bear with me...please...  We are wanting to implement drill-around security, and I've found many resources that explain the process.  We use laua (not lawson security), and if I understand things correctly, if I apply security at the element level, we can block all fields defined by that element in a product line -- exactly what I want!

Here is my dilemna, I'll use a single example.  I want to prevent users from seeing the Social Security number in drill arounds and selects.  When I go into element security, what are the rules/guidelines to do this?  Is there any relationship between the element I'm securing and the "Condition Name" or can I use anything logical to me?  Second, I go into the condition window (that has the keyword "when") and I build my condition, what do I need to enter in order to prevent users from seeing the FICA (SSN)?  Do I just do something as simple as 1=0  or Fica Nbr = 0?  Not quite sure on the building of conditions and can't find much in the way of documentation.  

Thanks in advance for the help!
-Chris