There is a Cell Properties option in the context menu for the table. I am attaching a short video that shows how things work as expected on my end. If this is not the behavior you would expect, I would suggest that you post your idea in our feedback portal, together with a detailed description of what you want to see implemented: http://feedback.telerik.com/Project/108/. Thus, all our clients will be able to see this, vote and comment on the idea and if it accumulates enough public interest we will consider its implementation. I am afraid that at the moment there is no MS Word-like "Apply To" dropdown in the Borders dialog.
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