The chart posted at Lottologix comprises a combination of both sums (obtained by adding the 3 winning digits), and roots (obtained by adding the digits of the sums). This chart was created or updated from the original version which only included the sums and not the roots. When using this chart, make sure that if you are playing using the sums (not the roots) you use the left column of the chart, with the header of "Sum." If you prefer to use roots (not sums) then use the right side of the chart, with the header of "Root." Regardless of which side you decide to use, there will be 22 numbers on each because you would need to look at all the end digits of the "Sum" or the "Root" you would like to find. If it's the sum of 7, you would need to look under the Header "Sum," numbers under 7, 17, and 27. If using Roots, then you would need to look at numbers under the header "Root," 7, 17, 27 (please note that these will comprise numbers with different sum totals, but don't pay attention to that, it will be right if you follow these instructions). Never mix the two columns. Be consistent in whichever way you want to go.
The other, newer version, which I first saw when I purchased Red's Hotsheets, was grouped in sets of 22 (sums and roots are mixed on that chart) and they are arrived at by grouping the numbers by their end digits, regardless of whether it's a sum or a root. The only thing I didn't feel comfortable with using Red's chart was that all the numbers were scrambled and not in box form and to me they were harder to find. The even newer versions I have seen now, like from WinD, and I just saw Pick3 Fairy's, and CalifDude's, are easier to read and work with because they are in box form and altogether "under one roof."
I believe this is why is so important to share ideas, old or new, in this forum, because there will be different, all great minds working together (like Lottaloot says) that can come up with easier and better tools.
Let's keep sharing.