According to the Tesla Powerwall website, the app is supposed to have additional "Customize" choices, titled "Time-Based Control", allowing us to set specific charge/discharge times, based on the different electric rates (time-of-use) that we have in our area. These rates vary widely, and this missing feature keeps us from being able to take advantage of arbitraging these rates/costs. How can the website provide these instructions on how to utilize this feature, when it isn't on the app. The mobile app I have is v3.4.3, which seems to be the most recent version. Why is this missing?