  Let $\mathcal{P}$ be a collection of cells and $I_\mathcal{P}$ be the
associated ideal of inner $2$-minors as defined by A. A. Qureshi in 2012. In
this paper, we provide a description of the package $\texttt{PolyominoIdeals}$
for the computer algebra software $\texttt{Macaulay2}$. More precisely, this
package provides some functions that allow to define the ideal
$I_{\mathcal{P}}$ in $\texttt{Macaulay2}$ and to compute its algebraic
invariants or verifying its algebraic properties. We explain the usage of these
functions and also give some examples. Refer to the tool provided in
$\textit{https://rizwan.phd/polyo/}$ to get easier the desired input data for
$\texttt{Macaulay2}$.
