Storage? Sd card instead of internal

Hi. How do I store my ringtone and notification and alarm downloads to my external SD card? When I download it only saves to my phone's internal storage. I have the Galaxy S5 and if you have the same phone I'm sure you're aware that the 16 gig phone fills up really fast and I don't have much room for anything other than the basics.

I've searched around on the settings for this site and can't find an option to automatically save to my storage card. I also can't figure out how to find my downloads to even move to my SD card after I've downloaded them. Please help! I don't like limiting my downloads to only two or three. I want to keep a folder where I can save all my favorite downloads so I can easily change them periodically. Thanks in advance for your help :)