\listfiles
\documentclass{jarticle}
\usepackage{tasks}

\def\iroh{色は匂へど散りぬるを我が世誰ぞつねならむ}
\def\Iroh{色は匂へど散りぬるを我が世誰ぞつねならむ
有為の奥山今日越えて浅き夢見じ酔ひもせず}

\begin{document}

\verb|\begin{tasks}|

\begin{tasks}
\task \iroh
\task \iroh
\task \iroh
\end{tasks}

\verb|\begin{tasks}(2)|

\begin{tasks}(2)
\task \Iroh
\task \iroh\ \iroh
\task \iroh
\task \Iroh
\task \Iroh\par\iroh
\end{tasks}

\verb|\begin{tasks}(3)|
\begin{tasks}(3)
\task \iroh
\task* \iroh
\task* \iroh
\task \iroh
\task \iroh
\end{tasks}

\begin{tasks}(3)
\task \iroh
\task! \iroh
\task! \iroh
\task \iroh
\task \iroh
\end{tasks}

\verb|\begin{tasks}(4)|
{\settasks{debug}
\begin{tasks}(4)
\task the first
\task the second
\task the third
\task the fourth
\task*(3) the fifth item is way too long for this and needs three columns
\task the sixth
\task the seventh
\task*(2) the eighth item is way too long for this and needs two columns
\task the nineth
\task the tenth
\end{tasks}}

\verb|\begin{tasks}(3)|
\begin{tasks}(3)
\task \iroh
\task* \iroh
\task*[(x)] \iroh
\task \iroh
\task \iroh
\end{tasks}

\verb|\begin{tasks}(4)|
\begin{tasks}(4)
\task the first
\task the second
\task the third
\task the fourth
\task \rlap{the fifth item is way too long for this so we start a new row}
\startnewitemline
\task the sixth
\task the seventh
\task \rlap{the eighth item also is too long} \startnewitemline
\task the nineth
\task the tenth
\end{tasks}


\verb|\begin{tasks}[style=itemize]|
\begin{tasks}[style=itemize]
\task a standard item
\task another one
\task[+] a different one
\task and another one
\end{tasks}

\end{document}

