Insights is a premium feature and only available to the Studio and higher plans. Also, only team members and administrators are able to see the insights page.
With Insights, you can get information and reports for all of the work within any of your projects. Insights will show you when a milestone, task, time was added, completed, due by any of your team members, across any of your projects and during a particular time interval.
Insights is available for Studio, Agency, and Agency Plus plans. If you want to get Insights, learn more about upgrading your account.