that ist simple. An example:
Make a document with placeholders (Test Adressbook.odt (8,3 KB)) and save it in the filemanager: /templates/addressbook.
Then go to the adressbook, right klick on a contact and choose insert in a document. The uploaded file should appear there…
Maybe you need to make an adjustment:
Preferences/File Manager/Collab Editor Settings/Merge printopen handler
if you dont have a online office. But it is great with Collabora online office.
In preferences in some modules you can/must adjust some paths.
There are lawyers or logisticians who use it for their business. You can also create serial letters or emails (with saved .eml).
Or have your email signature created automatically (Not translated, sorry.):