Board Thread:Support Requests - Getting Technical/@comment-32103198-20180219194310

I am trying to customize my own wiki a little, by trying to edit the new user welcome message (im an admin there by the way I know im qualified to do that)

How and where do I do that?

While looking stuff up on google about it, i found mediawiki:welcome user that apparently lets you edit it. Where do you find that? Sorry if im being incredibly oblivious 