<Tr> <Th> Lord Nil </Th> <Td> 17 </Td> <Td> Escape Artist </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Advanced </Td> </Tr> <Tr> <Th> Samuel J. Comroe </Th> <Td> 18 </Td> <Td> Stand - up Comedian </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Advanced </Td> </Tr> <P> The quarterfinals were broadcast live from the Dolby Theatre in Los Angeles starting on August 14, 2018 with twelve acts performing each night . The following night the results will be announced to the public with seven of the twelve acts proceeding to the semifinals . Each week viewers of the show also have the opportunity to send one act, determined by popular vote, using "Google's Instant Save", sometimes also known as the "Dunkin' Save" due to a sponsorship contract with Dunkin Donuts, via the America's Got Talent app or the official website . In the first week of the Quarterfinals, Human Fountains received a buzzer from Cowell and Lord Nil received one from Mel B. In the second week of the Quarterfinals, Yumbo Dump received a buzzer from Klum . </P> <Table> <Tr> <Th> Key </Th> <Td> Buzzed </Td> <Td> Judges' Choice </Td> <Td> Advanced (Won Public Vote) </Td> <Td> Advanced (Won Judges' Choice) </Td> <Td> Advanced (Recived Google's Instant Save / Dunkin' Save) </Td> <Td> Advanced (Received Judges' Wildcard) </Td> <Td> Eliminated </Td> <Td> Eliminated (Lost Judges' Choice) </Td> </Tr> </Table>

When do the live shows start for agt