I'm pretty sure Time Machine backs up the stuff in the user's home directory. It probably has some options. But I've only set it up a few times. Always with an external hard drive larger than the one built into the Mac Book the person owned. (Never see desktop Macs these days.) I do know it works really cool with seeing previous versions of files.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris