Sure. There are number of routes. It would have to be properly designed, but one route would be a template that on generating a new document:

- displays a userform with your choices
- choices are selected, by checkbox or listing (whatever)
- click a button and THOSE choices are inserted into the new document

Depending on the text that is to be inserted (and how), this could be by using INCLUDETEXT fields, or opening another text file to get the text.

In principle that is how it can work. It would take careful thought and design.

Some people go a reductive route: everything is in the new document and the selections determine what is removed. This is done by having everything bookmarked, as bookmarks are very easy to remove.