Re: problem to use Flagged Revisions Posted by Xavier de Pedro 21 Jul 2016 10:10 UTC Hi Edouard, and welcome to the Tiki user forums! 😊 Have you created the categories already? You need to do so before attempting to select them there (there is nothing to select, maybe, because you need to create the categories first?) See: https://doc.tiki.org/Category+Admin