Thanks. However, as I understand, WordPress multisite will not work if you’ve installed WordPress in a subdirectory. I can create example.com/a, example.com/b etc, but I don’t think I can create example.com/a/1, example.com/a/2 etc using multisite.
Also, I’m not much a fan of multisite. I would like to have nested installs, if that’s possible. Would you please let me know how to do this, if it’s possible? At least I think that auto-installers do not support this.