Step1: Add User
Open a DOS command,
net user net user u1 123.com /add net user u2 123.com /add
Step2: Create a folder
Step3: Modify User Folder Properties
Step4: New FTP Site
Right-click on the "Web site", added the FTP site
Step5: Modify user isolation
Step6: Open a DOS command, enter the IP address of your ftp +
So far, segregated accounts FTP server set up successfully.