@baris : Thanks !
I was still running nodebb v1.6.1 so i was unable to find the place you mentioned in the ACP.
But after a (difficult) upgrade to v1.7.1, i can now clearly see it :
That should do the job !
Hmm I don't think we expose isAdmin and isModerator globally to the templates so that you can them everywhere. Maybe we should, everything in the config object is exposed so if you open your console and type config any variable you see under that object you can use in the templates. You can also take a look at the routes by prepending api to the url like https://community.nodebb.org/api/topic/1917/users-shouldn-t-be-able-to-purge-their-posts/10 you can use stuff from there in the template as well.