This demo illustrates how to group scheduled appointments by date.
In this demo, you're able to navigate through currently visible resources, as well as increase or decrease their total number. For this, use the Resource Navigator control (toolbar buttons with arrows, plus and minus signs, and a drop-down list of resources), which is shown on the top of the ASPxScheduler control.
Also, you may change the currently active view (Day, Week, Month, etc.) using the corresponding buttons, and see how grouping by date is applied in different views.