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You can move the files or folder from the Device Store to SD card using the My Files app of your S5. Open My Files app. Tap All Files. Tap Device Storage and you will see several folders there. You should move the DCIM folder (this is your pictures folder), Downloads folder, Musics folder etc to the SD card. To do that, tap and hold down any folder and tap Move. From the resulting screen, tap SD card and this will move that selected folder to SD card. Do the same for other folders like Musics, Downloads etc
You can also applications like Move app to SD Card, App2SD to move applications from your phone memory to SD card. You can download these apps from Play Store. See here --> https://play.google.com/store/apps/details?id=com.ljmobile.move.app&hl=en
Another way to move is, open Settings. Open Applications Manager under More. Swipe left or right to Downloaded or Installed tabs. You will see several applications there. Select it and tap the Move To SD Card button. See this article --> http://www.pcadvisor.co.uk/how-to/google-android/move-data-from-android-phone-sd-card-3466195/
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