How to turn on red warnings of highlights in DPP?

[Echelon]

as the topic

[RobertTheFat]

In DPP 4 it's in tte "Preview" menu (or press Alt-M). In DPP 3 I believe it's in the "View" menu.

[Echelon]

I want have photo, like A2 where green color means that can save and white color means no save and no retouch.

photo A1 and A2: