Lookup Field in Timesheet Layout
Lookup field associates an existing task/issue field with a timesheet entry. By creating the lookup field you will be able to use the task/bug fields directly in the timesheet.
Let us assume that you are the project owner and you want to see the work hours of each task in the timesheet. By selecting the Task module and Work Hours as a task field, you will be able to create a lookup field in the timesheet layout. Enable the lookup field column to view the Work Hours in the timesheet.
The Work Hours field can now be viewed in the timesheet. Users can use the work hours as a reference when entering time logs.