You can open the configure dialog by choosing the menu command Settings->Configure KMLOFax.
This page provides some general options.
Show tooltips enables the tooltips in the dialogs.
Download new facsimiles only enables the download of new facsimiles only. Old facsimiles in the modem memory are ignored.
Delete facsimiles from modem enables the removement of facsimiles from the modem's memory after they have been downloaded.