https://confluence.atlassian.com/jirakb/how-to-use-average-time-in-status-gadget-776998092.html might be worth a look as well as that there are commercial plugins available on the marketplace like https://marketplace.atlassian.com/apps/1211756/time-in-status?hosting=cloud&tab=overview
if you have access to the database you could use the queries shared within
Background When you hear the words ‘Release notes’, almost always you think of an unsolicited email from a software vendor. But I am here to tell you that from our data, sending release notes via E...
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