The Timeline display mode of the Calendar widget now allows users to apply custom order of the device types shown as Resources.
This is possible through the Custom device details links option in the Calendar Configuration section of the widget configuration page. There you can drag and drop device type entries to the desired order.
If you apply custom order to only some of the available device types, the rest of the device types (if any) will be listed at the end, in alphabetical order.
If you do not apply any custom order, then all device types will be ordered alphabetically, which is the default behavior.
For further details, refer to Calendar widget.