I'm lost, I've been searching for some time on internet, but I can't find and good way to do the following:

The result should be a specification document based on excel values.
One part can be done with mail merge; the "dear sir...", address and so on.

the other part, the body text, should be generated on checkboxes that are ticked. The default texts are separate documents on a default location. And must be combined into one body text depending on the true/false of the checkboxes in excel.

And that's where I am lost.

Does anyone have an idea how to move into the right direction?

Many thanks,

Gerbo