On Label tab of Plot Details dialog, user can check Show at Specified Points Only and enter min max begin end (space separated) to show labels at maximum point(s), minimum point(s), begin and end points.

Begin (also -1) is used to refer to 1st point in display in case user scaled in.

Before Origin 2024, there was only row indexing e.g. 1 for 1st point, 2 for 2nd point, 0 for last points. To label min or maximum points user would had to manually find the min and max’s corresponding row index first.