#2 Apr 22, 2014 05:13
For the site in the image above I did this:
1. Create a folder
blogs/blog1 and put a stub file (http://b2evolution.net/man/stub-file) named index.php in it. Note: be careful with the route to the file _config.php.
2. Set the Blog base URL (http://b2evolution.net/man/blog-url-settings) to "Relative to baseurl" and type "blog1/" in the field next to the radio button's label.
3. Save changes.