Take your seat
take (one's) seat
To sit down. Usually said as a request, invitation, or command. OK, children, take your seats! Please go in and ask everyone to take their seats so the performance can begin.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Take your seat.
Please sit down. (Often plural.) Please take your seats so we can begin.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.