Start the Administrator Interface and connect to the Server.
At the bottom of the left pane, click the Server tab.
In the left pane, expand the Server, Site, and User Setting Levels of the User you want to configure.
In the right pane, click the Main tab.
Click Change Password.
Enter and confirm the password in the corresponding boxes.
Choose the Password Type from the drop down list. You may choose:
Standard – A plain text password is required.
Anonymous – Any password, including nothing, allows an anonymous connection.
Anonymous (Force Email) – Any well formed email address is the password
Click OK.
Click Apply.