Click on the plus signs next the folders to navigate deeper into subfolders.
Expand folders to expose subfolders
Tick the empty boxes to select which folders or files should be scheduled for backup.
When finished, close the window and wait for the next scheduled backup or click Start backup in order to run a backup immediately.
The 1&1 Backup Manager uses TCP port 443 for communicating with the backup server. Please ensure firewalls, as well as IP Security Policy, are not set to block incoming and outgoing traffic on TCP port 443.
Finish with selections
For additional information, you may want to reference: