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 statistics you can open your team on the overview page and get a high-level overview of time spent by each team member during the selected period and compare it with the capacity.

Read more about the Team Overview page: Team Overview

How to see detailed information?

If you need a detailed overview of spent time you can use the work log analysis option. On the work log analysis page, you can apply any group options and see the detailed information for each Jira project, Issue, or work log.

Read more about work log analysis: Worklog analysis in a team