From the Driver's Daily Log, you can send the driver's logs to the DOT auditor by clicking the "Send to FMCSA" button.
On the pop-up that appears, enter the date range and the officer's special code (they should know it). The file comment is important! Without it, the file will not get to the officer.
Once the form is filled out (like below), click "Send".
If everything goes fine, the screen that follows should confirm that everything was validated fine (if there is an error, please send an email to firstname.lastname@example.org).