We have a Galaxy Tab S2 for our company. We are trying to use a PDF file we use all the time for our work reports. We would like to fill out a copy, have it signed and save with a file name we choose. We can get it to do all of that but when we try and find the file it seems to only be saved within the Adobe App and not on the tablet or the SD card. How can we please have some guidance on how to find the files so we can put them in folders?