Atom 2 DTR view question

[jcdive]

I have a recently purchased Atom 2. I noticed on the first trip I took (and in reading the manual) that the main display during the dive shows DTR based on whatever you have the least of left; air or no deco time. I also noticed that I can get the no deco time to show by pushing the lower left button on the watch. I am wondering, is there any way to get the watch to always show the no deco time at your current depth on the main display as well as overall DTR?

 

[SolarStorm]

I just checked the manual online, but my question is why would you always want to show NDL?

Im a relatively new diver, but I like the fact that it always tells me what I have the least of.