TDI as we all know is "Trader dynamic index" , developed by Dan Malone. This indicator is widely used in Market maker trading strategy . I have seen many variant of this script with different settings but in my indicator the settings are as per Market maker guidelines , so those who are using BTMM strategy can directly apply this on there chart and start trading . Those who don't trade BTMM but use TDI can alter there default setting form the menu and use as per there strategies.
One of the way in which i use it is , i use to find divergences at supply or demand preferably and then when price close below Market base line (Yellow) it gives me confirmation that trend is now shifted and then i will take my Buy or Sell trades .
I hope this indicator would be useful for you.
just click in this indicator as you do for any other indicators present in TV and it will load automatically
Hope this will help