I want a blog at dev.tld/mu/ then I want a directory of city blogs (it will just be a page that links to each sub site) here dev.tld/mu/biz/ so I can do the following: dev.tld/mu/biz/city1 dev.tld/mu/biz/city2
And when I try to create dev.tld/mu/biz/city1 from this page dev.tld/mu/wp-admin/ms-sites.php by inputing this: biz/city1 under “Add Site > Site Address: /mu/” I get the following error:
Missing or invalid site address.
Thanks for explaining my first problem!