Barry and Nora plant the device in a pillar in the past and then set up a trap for Cicada in present day in episode 5x08 "What's Past Is Prologue".
Chloe and Dan talk outside the police station about a fight between the victim and her costar in episode 2x01 "Everything's Coming Up Lucifer".
Shawn receives an award from the mayor and then gives his own mayoral speech, later he solves the case in the meeting room in episode 7x10 "Santa Barbarian Candidate".
Vala, Daniel, General Landry, and Teal'c attempt to convince the congressional appropriations committee to not cut funding to the Stargate program in episode 9x04 "The Ties That Bind".
Meeting room seen at the end of episode #411 "Liftoff".
Rip requests the Legends help defending a young 'Barry' from Grodd in episode 3x17 "Guest Starring John Noble".