\defineenumeration[one]
\defineenumeration[two]   [one] % clone one
\defineenumeration[three] [counter=one,style=slanted] % only use counter of one
\defineenumeration[four]  [three] % clone three
\defineenumeration[five]  [three] [counter=five] % clone three and use own counter
\defineenumeration[six]   [three] [counter=four] % clone tree and use counter four (undefined)

\setupenumerations[one]  [prefix=yes,prefixsegments=section]
\setupenumerations[two]  [prefix=yes,prefixsegments=section]
\setupenumerations[three][prefix=yes,prefixsegments=section]
\setupenumerations[four] [prefix=yes,prefixsegments=chapter:section]
\setupenumerations[five] [prefix=yes,prefixsegments=chapter:section]
\setupenumerations[six]  [prefix=yes,prefixsegments=chapter:section]

\starttext

\chapter{test}

\startone   test test  1 \stopone
\starttwo   test test  2 \stoptwo
\startthree test test  3 \stopthree
\startfour  test test  4 \stopfour
\startfive  test test  1 \stopfive
\startsix   test test  1 \stopsix

\chapter{test}

\section{test}

\startone   test test  6 \stopone
\starttwo   test test  7 \stoptwo
\startthree test test  8 \stopthree
\startfour  test test  9 \stopfour
\startfive  test test  2 \stopfive
\startsix   test test  2 \stopsix

\stoptext
