Unless you are completely new to GNU/Linux and/or have no idea what you are doing, ALWAYS use
1. manual partition setup when installing a distro! If you don't you have absolutely no control over what happens, you learn nothing, you (probably) end up with a bad setup and you can't plan for persistence. Besides that, auto-partitioning will usually whipe your whole disk!
There are other setups as well across various distroes, don't use these! MANUAL PARTITIONING IS WHAT YOU WANT. It's...