One thing that hasn't been mentioned is how to align the tables to compensate for oddly-sized modules!?
The tables in the upper-left and upper-right have been misaligned to compensate for a little bit of module fun.
In the lower-left corner, there's a larger misalignment, which will leave a larger area at the end of the vertical table unused.? This can be used for flyers and other handouts; signs about the group, etc.