In Otus you can create a seating chart for each class. You even have the ability to add in the location of the door and any boards.
From the home screen, select Classes
Select Seating Chart from the secondary navigation window
View the Seating Chart
To add the door(s) for your classroom, select Add Door. To add the board(s) for your classroom, select Add Board.
Now you can see the layout of your classroom and experiment with various setups!