On the “Engineers” page, you need to merge the accounts that belong to the same engineers in the list, ignore developers or other accounts you don’t want in the reports (ex: Jenkins).
3.1 Merge engineers - from the list, select the accounts that belong to the same engineer and click "Merge".
3.2 Ignore engineers - from the list, select the accounts you want to ignore and click "Ignore".
3.3 Unmerge engineers - If you click "Edit" on the right side of the engineer's row, a pop-up will appear. You will see all the merged accounts and in order to unmerge an account you can click “Detach” on the right side of the account.