You are using the IOS system now, and IOS itself does not have the file management function of windows system on PC. In other words, the file doesn't mean that you can put it any way you want. The desktop can only put the shortcut entry of the application, and nothing else, so ppt files can't be placed on the ipad desktop.

IPad is a series of tablet computers owned by Apple. IPad is called TabletPC in Europe and America. After all, the tablet is not a computer, but a mobile phone, so a lot of data can't be changed, and files can't be placed on the desktop like a computer.