Add the ability to close a trade based on the delta. For double calendars, an example is to exit to the trade if the delta of the short call or put exceeds 70. The logic could be for TAT to scan the deltas of all the strikes in the position, and use the largest absolute value as a trigger to exit. Link to example https://optionomega.com/share/J1s0C3gyJaciSobznsmw