This question goes back to 2015.
I normally work with the "Pedigree" or "Family" RM display header.
A solution to the original question by "Greebo" follows:
1] Click on the RM "People" heading.
2] Then click on "Birth Date" heading to sort by birth date. I rarely use this, but Bruce Buzbee mentioned this feature in his recent presentation at the Rutherford Hayes Presidential Library in Fremont, OH.
I did notice that I have some poorly formed alphabetic birth dates from data entered many years ago that should be fixed.