If you print multiple copies of a document, then you can choose to print the copies as a set (collated) or to print the copies as groups of pages (not collated).
Load an original document faceup, short edge first into the ADF tray or facedown on the scanner glass.
If you are loading a document into the ADF tray, then adjust the paper guides.
From the home screen, navigate to:
Copy > enter the number of copies > Collate > select the preferred order of pages > > Copy It