Hello Ron,
Dragging of labels is not possible, but if they are long and within a small space, I would suggest using tooltips to display their full text, similarly to this demo:
Scatter Charts / Binding to remote data
Based on the distribution of data points, it could help if you leave only a portion of the label text and possibly shorten it with an ellipsis at the end:
https://dojo.telerik.com/eGAqOWip
Regards,
Tsvetina
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