Only HR can activate/deactivate the module and this is done at the level of the individual employee. Go to the left sidebar > click on "HR Dashboard" > Click on the "People" button > Select the employee > Click on the eye icon > Click on the view more button "(...)" > Click on the "Settings" button > Go to the ''Manage Module Access'' section > Select "Yes" or "No" next to the "Timesheets" field.