Sveika, Krista, un laipni aicināta eazyBI kopienas lapā!
Instead of Days in transition status, you may want to use measure Average days in transition status from predefined measures. Drilling through issues, you would see the average in this status for each issue (usually total days; average if there had been several transitions from the same status for the issue). Import issue change history - eazyBI for Jira
About the first sprint. It would be a quite complex calculation that most probably would time out the report. At the issue-level, you may retrieve the issue first sprint quite easily, but applying it as a filter to all calculations is the hardest part. (See, for instance, community thread Report Issues with the first sprint only)
Instead, consider creating a new JavaScript calculated custom field, that, for each issue, retrieves the issue first sprint, and then import it as a new dimension. Then you would just apply this dimension in Pages as a filter, and all results in the report would come only from the issues with the selected first sprint.
Read here: JavaScript calculated custom fields - eazyBI for Jira
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