Seagate Server - Manual (Page 110)

Mirra Manual for Windows Release 2.2 102
The Windows dropdown menu opens:
Figure 6~14 Windows Dropdown Menu
Step 2: From the dropdown menu, select Share using Mirra Server.
If the folder has not yet been backed up, Share
using Mirra Server does not appear on the menu.
You can use the Add to Mirra Backups menu
option to select the folder for backup. Once you’ve
completed the backup process, right-click the
folder again and share it. See Selecting Folders for
Backup on your Windows Desktop.