Synergy has an option to recreate your document folders on your on-premises file server.
When you create a new project, it creates a folder in Project menu > Documents > Document library in the cloud. The folders are then automatically created on your on-premises file server.
All new project folders will be synced to your server local drive.
What doesn’t it do?
It doesn't:
Delete local folders
Rename local folders
Sync old project folders, except a new child folder be created
Do anything with Staff or Contacts folders
See also:
Why should I connect to the Windows file server?
How do I connect to the Windows file server?
How do I name folders using Windows file server?
How to install FileSync.exe
How does multi office affect connecting to Windows file server?