Worklogs - Time Tracking and Reports are ready to use as soon as you install them. You can find the link “Worklogs” in Jira’s top menu. Alternatively, you can also find Worklogs via Reports.
Upon clicking on the link you will be shown the Worklogs report in a form of a table that you can filter and group as you wish. For convenience, you can also log the time directly from this view.