Some of us have been using the Kit for 6 years, and we've read all the posts and watched it all develop.
Along the way, we helped beta test the whole system, watched several changes in the formulas, etc.
What the "chart" is, is just a best practices guide. There isn't really a wrong way, but after much experimentation, there's a "best" way, which has changed over time.
I don't actually know what the current best practice is. What I know is that it really doesn't matter. Feed them Trans for the whole grow, or Growth, or even Cat Drench. It's all been tried. It still works "best" if you alternate Growth and Trans, with a water rinse in between. 2 Cats at pistil set, then alternate water and Growth with a Trans thrown in here and there.
But it doesn't really matter. The biota are in control, and we can't examine them. So we just feed 'em, and it almost always goes well.
The chart and the instruction and the schedule, and all the precise stuff, is just to give people a roadmap. You just do the senseless drench/water/drench and watch the plants for the first run. If something goes hinky, you ask one of us what to do. Otherwise, no amount of studying the charts and instructions will help much.
There's no way to screw anything up because you didn't study all the details of the chart. The chart only exists because some users had a hard time grasping the drench/water/drench thing - they wanted a chart. Some people wanted more detail about precisely which drench to use at which times, so there's a schedule.
Drench/water/drench. When the new buds look good, switch the soil charge with the 2 Cats. Go back to drench/water/drench.
Dunno. Seems stupid. Hence the color charts and detailed schedule.