Add note about extended Q&A, tech check

1 files changed, 14 insertions, 3 deletions

diff --git a/2021/prepare.md b/2021/prepare.md
index 669088de..ea8efd2c 100644
--- a/2021/prepare.md
+++ b/2021/prepare.md
@@ -101,9 +101,9 @@ WebM format if possible.*
 > format.  The closer to this format submitted video files arrive in,
 > the easier it will be to process and upload them.
 
-After you send in your video, if you've indicated that you'd like to
-do live Q&A, we'll set up a tech-check call with you.  We'll post
-details here closer to that time.
+If you're planning to do live Q&A, you can check your system setup at
+https://test.bigbluebutton.org/ .  We'll set up a tech-check call with
+you, too.  We'll post details here closer to that time.
 
 Thank you so much for helping with EmacsConf 2021!
 
@@ -157,6 +157,17 @@ up the talk wiki pages.  That way, you can see what else is going on
 in the conference and maybe coordinate with other speakers in order to
 minimize overlap and maximize awesomeness.
 
+## What if there are lots of great questions during Q&A and we run out of time?
+
+You can continue answering questions on the collaborative pad or IRC,
+and we'll copy questions and answers onto the wiki page
+afterwards.  You can also answer questions on the wiki page even after the event.
+
+An extended live demo or Q&A session might be possible if someone
+volunteers to broadcast it on an alternative stream.  If you or a
+volunteer is interested in helping with this, please feel free to
+contact us at <emacsconf-submit@gnu.org>.
+
 ## More questions?
 
 Please email <emacsconf-submit@gnu.org>.  We'd love to hear from you.