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Here you can set a new password for logging into the application. To set a new password the current one must be entered first. The (struck-through) eye icon in the input field on the right allows you to display the filled-in password so that it can be seen. Otherwise, it is not displayed for security reasons, and only dots are visible instead of actual characters.
Changing a password in the application is not available for users from Active Directory. These need to change it in the AD.