This option will take all of the profiles stored in your Profiles Folder and add them your machining database. Entries that already exist in your database will be overwritten.
The advantage of having them in your machining database is that you can attach toolpath layer information for each profile and have CabinetSense generate your MDF profiled doors for you.
If you became a CabinetSense subscriber before Profiling was released, use this option to get the basic set of profiles added to your database. Newer subscribers will have downloaded the startup database that already has the basic set added.