run the show

run the show idiom
Take charge, assume control, as in Ever since Bill retired from the business, his daughter's been running the show. The word show here simply means “kind of undertaking.” [First half of 1900s] A similar usage is run one's own show, meaning “exert control over one's own activities” or “act independently.” For example, The high school drama club didn't ask permission to perform that play—they want to run their own show. [Mid-1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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