How to Move Credits Wrongly Placed in "Rest of Cast Listed Alphabetically" to "Cast (in credits order)" Section?

Sometimes the Screen Credits and the "Rest of Cast Listed Alphabetically" are wrongly divided on the cast page.  When that is the case, how can users move Actor/Character roles into the correct section?  I see no instructions anywhere.  

Here is the example I'm working on.  I have the KINO Blu-ray of Dangerous to Know (1938).  The Screen Credits (which are at the end) show 16 Actor/Characters.  The IMDb list, however, has only 12.  That last 4 are missing, and wrongly placed in the "Rest of Cast Listed Alphabetically" section.  I want to move the last 4 people into the top section where they belong.

The last actor/character showing on the current Screen Credits is:

Edward Pawley                John Rance

The last four actor/characters on the Screen Credits, who should be moved up from the other section and placed immediately under Pawley/Rance, are (in order of Screen Credits):

Eddie Marr                      Crouch

Harry Worth                    Hanley

Robert Brister                  Councilman Murkil

Pierre Watkin                   Senator Carson

[Note:  Currently Harry Worth's character name is misspelled as "Haley", but both the onscreen name in the credits and the name as spoken aloud by Akim Tamiroff is "Hanley".]

I don't mind if someone on the IMDb staff moves the names in this case, but I would like to know how to do it myself in the future, whether the credits need to be moved from the bottom section to the top, or vice versa.  Can some expert help?