The order of the resources (rows) follows the order of items in the Resources collection:
http://doc.daypilot.org/scheduler/resource-loading/
The events are sorted automatically using a rule corresponding to "start asc, end desc". If you need to apply custom order of concurrent event then you will need the Pro version:
http://doc.daypilot.org/scheduler/event-sorting/
In the Pro version, you can specify the order using EventSortExpression property.