Once mastering SPLIT, try these for size!!

OR, open Event in Trimmer and scrub WHAT you want and drag this to timeline.

OR, create Loop region and go on to make a Sub-clip from Timeline or Trimmer

OR, create Regions

OR, fold-back event to where/what you want

OR, Split Screen Edit either Ctrl+Alt and drag or ALT drag

OR, Split Screen Edit on overlap also with Ctrl+Alt and drag or ALT drag

OR, A+B alternate ( Expand Track option)