Thread:EnderChas/@comment-33594813-20180122193328/@comment-33594813-20180124053112

Copied from a wikia support page:

Set MediaWiki:Welcome-user to one of the following:
 * @latest - most recently active admin, or FANDOM staff if no admins have been active in 60 days
 * @sysop - most recently active admin (with no fallback to FANDOM staff)
 * @disabled - entirely turn off welcoming of new users
 * To have all welcomes come from a single specific user, write only their username in plain text, such as John Smith