Autofill is not retroactive...
If it is a just a specific date range you need autofilled we can do that. Just send us your backup file to the help desk with the request.
However, a Custom Turbine PIC column is not recommended. Logbook Pro already tracks that and more in the analyzer. Totals are available natively or through the use of various filters in the analyzer. Using the power characteristics filter you can exclude all piston time and only show turbine time. This would make duration = total turbine and PIC = TURBINE PIC. A custom Turbine PIC column can introduce human logging errors into your logbook.