Meaning: Prepare equipment, software, etc., for use
Example: The technician SET UP the computer network perfectly.
Meaning: Start a company
Example: They SET UP a dot com company, floated it a couple of years later on the Stock Exchange and made an absolute fortune.
Meaning: Provide someone with the money needed to live
Example: Winning the lottery SET them UP for life.
Meaning: Trick, deceive
Example: The police SET them UP.