\setupinteraction[state=start]
\setupinteractionscreen[option=bookmark]

\enabletrackers[structure.lists]

\placebookmarks[chapter]

\placebookmarks[title][force=yes] % normally not placed as unnumbered

\starttext

\starttitle[title=Test title, bookmark=TitleBookMark?]
    bla
\stoptitle

\startchapter[title=Test title, bookmark=ChapterBookMark?]
    bla
\stopchapter

\stoptext

