I'm surprised you can't find a solid answer on this since it's quite an advertised feature. In any case, what you don't find is the truth about loading apps onto SD cards.
Here's the deal: You CAN move apps to SD cards on this tablet. However, that's not always the case. Why? The devs. While Samsung restored what Google removed from Android (App2SD), it's still up to each app's developer to decide how much, if at all, can be moved to an SD Card. Some apps will let you move most data, some just extra files, some nothing at all.
As another user suggested, you can root the tablet and 'hack' it into thinking your SD card is part of your internal memory, therefore allowing you to install anything onto it, BUT I SUGGEST YOU DON'T. SD Cards are not as reliable as you think (unfortunately, that's even more true with newer Samsung devices, where random mounts/remounts of SD Cards seem to be plaguing the user's experience), they're slower than internal memory and apps will perform much better if run from internal rather than external memory, even if emulated as internal.
So there you have it.