Gallery Issue - Trying to create new folder, system says insuficient memory.

[AC Question]

SM-T800
And Ver: 5.0.2

Hi World,

I'm not being able to figure out how to get gallery to load to SD Card. Looks like I have one or two folders on SD Card, however, for the life of me, cannot move the app itself to SD Card. I notice something was amiss when I tried to create another folder in Private Mode, after six atempts I finally paid attention to the momentary notice at the bottom of the screen that said there is not enough space and folder cannot be created.

Can I place ALL pix, vids n folders on SD Card whilst leaving the app where it is?

I take many SLR pix in RAW and other large sizes, I have a 32GB SD Card which when I go look at device storage, shows almost all free space. What's going on here.

HELP!!!!
Spencer in CDM