I would gladly help you set it up, but there seems to be no point to have 10-100 more witnesses - the community/users cant even decide to replace 1 of the developers 12. Get on the slack and Ill guide you anyway, the process is basically the same if you follow the instructions for running a hub here https://gitlab.com/snippets/1548253

BTW, the wiki is now reachable at https://wiki.byteball.org/ as well, besides https://byteroll.com/