text: **5 Key Category Analysis**
  
  This functionality allows the user to identify and select one of the categories to be used for performing the Key 
  Category Analysis (KCA). Upon selection of the category, the system will perform both**level assessment**and**trend**
  **assessment**for which the data are available. The corresponding results of the assessments are available in the 
  reporting tables. 
  
  The selection of one or several categories is undertaken as follows. When pressing the ‘Key Categories Choice’ on 
  the top main menu bar, on the left hand side, select the KCA Year to be used, the navigation tree displays all sector 
  nodes with the following columns (figure 27): 
  
   Description 
   Gas 
   Percent of Total 
   Default List 
  Top 95 
   
  Important 
   
  
  The user will have the option to use the default list or customize it. (see figure 27) 
  
  ***Figure 27. Key Categories Choice main screen***
  
  *NAIIS-User-Manual.Docx* Page 21  10/02/2013 