It's a NaNoWriMo time again (National Novel Writing Month - http://nanowrimo.org/), and I didn't do enough research on my secondary characters.
Since NaNo is time-sensitive (50,000 words in 30 days), I'm ignoring the fact that most of my supporting characters haven't been named, described, or received their back stories yet.
Instead, I'll write the scenes that don't include them, and come up with one or two of these missing characters every day. Later - probably after November is over - I can go back in and add these secondary characters.
See the writing prompt below to practice writing around something you haven't researched.