Recording Multiple Tracks in Garage Band

Using the Behringer UCA202 is an inexpensive way to record inputs as separate tracks in Garageband (or other audio software). I've got a Mackie 802-VLZ3 mixing board and have been trying to figure out how to record instrument and voice as separate tracks in Garageband so I can edit them individually and apply various effects. I happened to also have the Behringer UCA202 that I bought a while back for some podcasting work and after a little research, figured out how to use that to get the 2 tracks. There better (but more expensive) options to do this using a more high end audio interface, but the Behringer device is a really inexpensive way to get the job done with equipment that I have on hand. I recorded this pretty late at night so I can remember all the settings, both on the mixer and in the software, so I'll apologize up front for the lack of polish on my video quality & lack of scripting!
Here's a link to the Behringer UCA202 on Amazon - http://amzn.to/2CwqeGr (that's an affiliate link). I've also recently started using a Behringer UMC404 which is probably the next step up as far as economical audio interfaces go and I'll shoot a video of that soon!