You can associate a culture with a user, which defines the language of the user interface, and you can specify for each user whether they want times displayed in 12-hour format (for example, 03:45 PM) or 24-hour format (for example, 15:45). The default is 24-hour format.
For more information about creating a multilingual system, see the Designer Guide.
To enable each of these features you need to add a field to the appropriate user window using Window Manager, and then use the Administration component to set the required value for each user.
To set a culture for a user, you need to add the Culture attribute to the appropriate User window and then set the required value in Administration.
To specify the time format for a user, you need to add the Time Format attribute to the appropriate User window and then in the Administration component select either 12 Hour or 24 Hour for each user.