This example fails for me using the current (2014-09-27) standalone beta and with TL14. The failure is that the list of authors is presented as a grid without contents.There is a example on the wiki. You have to set your own values with the second argument of the \startchapter etc. command, to display the entry in the roc you have to write your own layout where you access it with theĀ \structurelistuservariable command.
Wolfgang
\bTD \structureuservariable{author} \eTDto
\bTD xx \structureuservariable{author} \eTDresults in a table with the new text, but no user variable text, showing that the \structureuservariable commands are not returning any text in this example.