By checking the "Login as anonymous" check box the user will be logged as anonymous user.
Via the "Use information from your last login" check box you tell to the program to use for login the information about name and password from the last successful login.
The "Login as" check box allows to specify the user name, password and group for login.
To the "Username" text box enter the user name, which should be used for login.
Into the "Password" text box is necessary to enter the valid user's password.
If the user belongs to some group, it is necessary to select the valid group from the "Group" combo box.
The user's rights in system will be adjusted on the user's login, according to his allocated rights.