1. Setup criteria
Log in as a user with the 'Jira Administrators' global permission.
Select Apptime in the top navigation bar.
Click Criteria at the left-hand side of the screen.
Define the date range for which you want to view the worklog.
Select projects and/or specific issues for displaying.
Pick user(s) to see worklog of a particular user.
Apply filter
2. Group the data
After applying filters data will be displayed in a column on the right side.
Information can be grouped by:
Project
Issue
User
Work Description