Autoloops are created in Edit Mode using the same Control Track workflow as Scripting audio tracks. However, Autoloops differ from Scripts as they are not attached to an audio file. Instead they are cued when an audio file is loaded into Serato DJ that doesn't have any lighting information attached.
Autoloops are stored in Banks in Edit Mode. There are four Autoloop banks with room for eight Autoloops in each bank; 32 Autoloops in total.