Include Addr1, Addr2, City ST Zip on one line as Variable

Place in Calculation for a Variable (right click and choose Calculations or from Calc Tab):

Value := '';

If length (Individual['Address 1']) > 0 then

 value := value + Individual['Address 1'];

If length (Individual['Address 2']) > 0 then

 value := value+', '+Individual['Address 2'];

 value := value +', '+ Individual['City']+', '+ Individual['State']+' '+ Individual['Zip code'];