Collocations for press conference - noun

joint
impromptu
post-match, post-summit, etc.

call
arrange, organize, plan
give, hold
tell
The chairman told a press conference of the forthcoming merger.

at a/the press conference
The proposed changes were outlined at a press conference.

during a/the press conference, in a/the press conference
The announcement was made in an impromptu press conference at the airport.