By typing the following, the two boxes with its number contents are lying next to each other from left to right:
How would I set it up whereby one box is sitting above the other box?
It's a little like brackets.
In brief I had:
\begin{array} -1 opens first table
\begin{array} -2 opens second table
\end{array} -2 closes first table
\begin{array} - 3 opens third table
\end{array} - 3 closes third table
\end{array} - 1 closes first table