Hi Sathesh,
Title and Tags are free-form text fields, it is not supported to group free-form text fields to the chart.
You could submit a User Voice at website below, Product Team will evaluate your suggestion carefully:
https://visualstudio.uservoice.com/forums/330519-team-services
Best regards,
MSDN Community Support Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading
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