This is the fourth "question" you've posted here without giving us enough information, although this is slightly better than the last three.
Could you PLEASE tell us more when you ask questions.
The best answer I can give you with the nearly useless question is for you to google for "Jira Agile Burn Down"
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Hi Atlassian Community! My name is Shana, and I’m on the Jira Software team. One of the many reasons this Community exists is to connect you to others on similar product journeys or with comparabl...
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