The use of various index drawing modes is quite different. It depends upon circumstances and your requirements at a particular point of time. Some times, you may require to view indexes in two or three modes, to get a more clear picture.

When you are most interested in a very focused life-aspect and wish to analyze that particular aspect only in great detail, you should choose "Single life aspect" mode. The bullish and bearish periods for the life-aspect of your interest would be clearly visible as "green" and "red" patches respectively in the Vjyotish index. The turning points in the required life-aspect will also be easily identifiable in this mode.
 

When you want to have a bird's eye-view over a broad region of your life with comparative study of various shades constituting this region, then, you should opt for using the "Relevant group of indices" or  the "Multiple life aspects" mode of the program.
 

For example, In the "Multiple life aspects" menu, there is a index group, with the heading - "The Chanakya in you". The following four indices form this group:
 

The above four indices (representing four type of policies) provides you a comparative answer - as to which policy should be adopted on a particular date for better dividends. As you know, Chanakya, the great Indian philosopher, told about four types of policies ("Saam", "Daam", "Dand" and "Bhed") which a person may adopt under varying circumstances. Suppose, on a particular date, your "Bhed- policy" index is not only green but also the lengthiest. While the "Daam policy" index is red with maximum length. It will clearly provide astrological clue that you should adopt the policy of creating differences among concerned persons to get your own work done. On the contrary to it, you should not try to get your work done through the help of money (bribery). It may back-lash.