Basically you should use Table for this kind of layout. Check out the Table Wizard. This wizard is introduced as guide through the process of creating a Table for your reports. The intuitive step by step instructions would get you going in no time as no previous experience is needed when using the wizards.
However, if this is not applicable you can do it with panels and anchoring.
See attached screenshot for more info.
Greetings,
Elian
the Telerik team
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