create a word plugin that will import items from a file when selected from a list

I would like a word plugin (custom named) to provide a drop down of items (preferably something i could add too?) and when these items are ticked and then press submit. it will import the related items into the word document. At the moment these items are inside another word document. i have attached a screenshot as an example. i have a document full with those green tables each one is a different "vulnerability" that i would like listed in the word plugin. perhaps the word plugin can be updated using the "contents" of the tables document. As i hope to update this tables document with more vulnerability tables. I am needing a quick turn around on this project i hope you are able to help thank you