Presumably, you're referring to one of the macros in:
https://www.msofficeforums.com/word-...generator.html
https://www.msofficeforums.com/word-...soft-word.html
The AcronymLister macro discussed in the first thread doesn't read anything from a table - it simply finds acronyms and creates a table of them.
The AcronymManager macro discussed in the first thread processes acronyms listed in the last table in the document to ensure referencing consistency.
The AcronymFinder macro discussed in the second thread processes acronyms listed in the first table in the document, but the table # is easily changed.
The latter two macros also show how to read cell contents.
See also:
https://www.msofficeforums.com/word-...ym-finder.html &
https://www.msofficeforums.com/word-...-spelling.html