[Build Help]Adding a hdd to a sdd build

The SSD has the OS and most used programs already loaded on it. I wanted the extra space for games, and media.

I bought a hdd to add some storage to my current 128gb ssd build. Is adding the hdd as simple as making it the slave to the sdd in the BIOS or should I do more research into installing a second hard drive? Is there a guide to add it to my current build.