\starttext

\defineitemgroup[itemizeone]

\setupitemgroup[itemizeone][1][symbol=numbers,      width=1cm,left=(,right=),stopper=]
\setupitemgroup[itemizeone][2][symbol=characters,   width=1cm,left=(,right=),stopper=]
\setupitemgroup[itemizeone][3][symbol=romannumerals,width=1cm,left=(,right=),stopper=]
\setupitemgroup[itemizeone][4][symbol=Characters,   width=1cm,left=(,right=),stopper=]

\startitemizeone
    \startitem
        level 1: (1)
        \startitemizeone
            \startitem
                level 2: (a)
                \startitemizeone
                    \startitem
                        level 3: (i)
                        \startitemizeone
                            \startitem
                                level 4: (A)
                            \stopitem
                        \stopitemizeone
                    \stopitem
                \stopitemizeone
            \stopitem
        \stopitemizeone
    \stopitem
\stopitemizeone

\defineitemgroup[itemizetwo]

\setupitemgroup[itemizetwo][1][symbol=numbers,width=1cm,left=(,right=),stopper=]
\setupitemgroup[itemizetwo][2][symbol=numbers,stopper=.]
\setupitemgroup[itemizetwo][3][symbol=Romannumerals,width=1cm,left=(,right=),stopper=]
\setupitemgroup[itemizetwo][4][symbol=Romannumerals,stopper=.]

\startitemizetwo
    \startitem
        level 1: (1)
        \startitemizetwo
            \startitem
                level 2: 1.
                \startitemizetwo
                    \startitem
                        level 3: (I)
                        \startitemizetwo
                            \startitem
                                level 4: I.
                            \stopitem
                        \stopitemizetwo
                    \stopitem
                \stopitemizetwo
            \stopitem
        \stopitemizetwo
    \stopitem
\stopitemizetwo

\stoptext
