Finished

The sync task is set

One shared folder on the NAS stays matched with the SynologyDrive folder on this Mac.

What you did

  1. Ran the Mac setup helper to install Drive Client.
  2. Allowed it to find devices on the local network.
  3. Signed in to the NAS.
  4. Chose Sync Task and linked one shared folder.

What happens now

Files in the shared folder you confirmed stay matched between this Mac and the NAS.

When this Mac should keep a second shared folder, add another sync task the same way: Sync Task, Edit on the NAS row, one folder, OK, Done.