The divergence algo trade aid is designed to detect delta divergence in a bar. It has a variety of important parameters that can be used to tweak the detection.
There are a large number of options in this section. Most are self-explanatory, and all have at least brief text covering their usage/meaning directly within the product, which will always be up-to-date. Just hover your mouse over the relevant setting, and you should get a pop-up. If not, please check you have not disabled pop-ups/Tooltips in the NinjaTrader settings. Some of those options will not be explicitly documented here (this saves precious electrons!)
Enable
Globally enables or disables the algo, regardless of the other settings
Alert
Generates a native NinjaTrader alert on detection
Voice alert
Plays a speech alert on detection
Play Sound
(the specified full path to .wav file), on detection
Re-arm afer X seconds
Intended to prevent too many consecutive alerts
Delta tolerance
Allows some variation in delta from the ideal, for example, delta could still be negative after being much more negative, and still trigger positive divergence.