? About Backup Choices

I understand there are two basic ways MBL backs up files. One is to let MBL search for and back up files based on their file extension. And the other is specify which drives/folders/files are to be backed up. Is that correct?

If you select the second method are the selected files still backed up each time they change, and new files are still backed up in real time as they are created?

The reason I ask is that I have done this once already using the first method and would like to start over again using the second method (if there is one).

It appears when you set it to back up specified drives and folders you set the backup frequency the same way, and real time is the default.