my apologies for the delay. You can connect the panels however they will fit as long as you get 3 rows, and then you can tell the library to rotate or mirror the display if needed.
For instance, I just built Marc's Blog: arduino - Putting some P5 64x32 Azerone Panels To Good Use, a Big 128x192 Matrix where the display is the wrong way around, but I tell the lib to rotate it 90 degrees and I get the framebuffer I wanted.