Welcome to the forum @thierry.vazquez
Any question about the post you replied to? Not much in design has changed…
Backup all my pcs in my office using duplicati from 4 days ago might also clarify.
There are no agents plus central manager. Ideally Duplicati goes on the system.
Remote management may be possible if a network connection provides access.
One bit of external progress is you can script that using a command-line client…
Central reporting is pretty easy, and there are numerous solutions that provide it.