Modifying tables in multi-page documents

[TheHighExalted]

Hi guys, I've got an issue with modifying tables in a multi-page document. I have 41 page documents wherein each page contains more or less the same table, and I need to add a few columns/rows to it without in turn pushing every following pages' down the corresponding space. I have a feeling this will have a simple solution, and that perhaps I don't know the correct language to describe the issue for google, as I cannot imagine 15 years of development missing what seems so basic to me! Thanks in advance, and I can provide copies or further description of the documents in question if necessary.