Answer:
Press conferences take a fair bit of organising, and they are not easy events to manage. You therefore only want to hold one when you have really big news to communicate, and want to get it out to a large audience as fast as possible.
No journalist worth their salt will turn up to a press conference if the news has already broken. It has to be ‘new’ news. The only exception is if you’re responding to a disaster but, even then, the press conference has to be the first time that you have given a formal response, or you have to have something new to share with the media.
If nobody’s asking, then probably nobody wants to know and the press won’t turn up at your press conference. The time to hold a press conference is when you can’t manage the phones because so many journalists are seeking information.
24-hour rolling news has rather changed the landscape of press conferences, but it’s still worth remembering that news organisations may be aiming at specific television slots.
A mid-morning press conference gives you the best chance of hitting one of those slots. Mid-week is also generally considered better, as it is quieter for news.
You don’t have to go anywhere fancy to hold a press conference.
A meeting room will do, provided that there is a suitable ‘top table’ and plenty of room for the press. But if you do go elsewhere, don’t forget to visit to check the venue is suitable, and also make sure that you have a ‘plan B’ in case there’s a problem.
If you’re responding to a disaster, it may be a good idea to be at the location of the problem. If nothing else, it will demonstrate that your top team is on site and not 500 miles away.
Step-by-step explanation:
I can't put it all in one answer :|