As a team lead, you would need a statistic on what time is spent by your team members. You might need additional information about the progress (difference between spent time and capacity).
How to get general information?
To see the statistic statistics you can open your team on the overview page and get the a high-level overview of time spent by eaach each team member during the selected period and compare it with the capacity.
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Read more about the Team overviewOverview page: Team Overview
How to see detailed information?
If you need a detailed overview of spent time you can use Worklog the work log analysis option. On the Worklog work log analysis page, you can apply any group options and see the detailed information for each Jira project, Issue, issue or worklogwork log.
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Read more aout Worklog about work log analysis: Worklog analysis in a team