StoryBoards just draw them
You can easily create templates in most creation software
Word, Publisher, Excel, illustrator, Paint, Photoshop etc etc etc
I have an illustrator template at college
it's like
code:
________
_ _ _ _
|_| |_| |_| |_|
_ _ _ _
_ _ _ _
|_| |_| |_| |_|
_ _ _ _
Which works out having title of piece at top, squares along rows then a line to explain what's going on in each
/ 
