Sum 2 filter 

You have to study the statistic of the Sum 2 balls in the Sum Display view. Sum 2 filter act like a multiple key filter. Instead of specifying the exact number to filter, this allow you to pin point the sum pairs. The example below will give you a better understanding on how to make use of it. The item 1 is the sum of 2 balls. You can change the value of the sum by double clicking the cell in cyan color and type in the new value over it. 

Example on how to use the sum 2 filter. 

In this example, if you are selecting 28 numbers 01,02,03,05,07,08,09,10,14,15,16,18,19,25,26,35,32,22,24,38,40,30,28,45,44,42,33,31 You are using DIY Wheel with the template of sw64428.awt
Without any other filter, it is generating a total of 1489 tickets, which is quite a huge amount of tickets. Usually, after studying the sum 2 statistic, you can derive a pretty good chance of sum to reduce the number of tickets. You are employing a smart play. An example below is applying a sum of 46 as a filter.
Notice the amount of ticket reduced to 444, which is 30% only. Of course, some risk factor is involve when you use this filter. 