Ah, yes: https://www.msofficeforums.com/word-...numbering.html

For what you now seem to require, you'd use different variants of the macros for whichever numbering schemes your source documents employ. Simply examine the document to determine numbering scheme, then run the macros applicable to that scheme. Thus, (per the Eileen's Lounge macros) you might have macros named:
ApplyMultiLevelHeadingNumbersA
ApplyMultiLevelHeadingNumbersB
ApplyMultiLevelHeadingNumbersC
and
ApplyHeadingStylesA
ApplyHeadingStylesB
ApplyHeadingStylesC

So, if (a) is Heading 3 in one document and Heading 4 in another, you'd simply choose the variants that fit the Heading 3 or Heading 4 scenario, as appropriate.

And, to further automate things, you might insert a line like:
Call ApplyHeadingStylesA
just before the 'End Sub' of the ApplyMultiLevelHeadingNumbersA macro, and so on.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]