configuring authentication on apache 2

i just read through
http://svnbook.red-bean.com/nightly/en/svn.serverconfig.httpd.html and i
have a couple questions. if i use a block that sets 'SVNParentPath
/srv/svn/repos' for <Location />,

[1] this means that i do multiple `svnadmin create <projecname>` within
/srv/svn/repos, right?

[2] can i do other blocks that define things for subdirectories? (i want to
have everything in the environment the same for all repositories, but
different AuthUserFiles for each subproject)

thanks,
john

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