When I worked on Xena: Warrior Princess and an outside writer delivered a script, RJ Stewart, the head writer, would say, "On page 10, line 3, read me that sentence. The most important sentence is always there." Of course, he was kidding, and the page and line numbers always changed, but it was a fun game.
So, what's your most important sentence? Page 10, line 3. When the thread slows down, anyone can chime in with new page and line numbers.
Here's mine from an untitled WIP.
The next day, Chase walked Alex to school, where he saw his father standing out front with the other parents.