You're reading the public-facing archive of the Category Theory Zulip server.
To join the server you need an invite. Anybody can get an invite by contacting Matteo Capucci at name dot surname at gmail dot com.
For all things related to this archive refer to the same person.
Does anyone know if/where/when Grandis and Paré's Multiple categories of generalised quintets has been published?
I believe the paper itself has never been published (I do not know why). However, much (if not all) of the content appears in Grandis's book Higher Dimensional Categories: From Double to Multiple Categories.
Thanks!