Configure My sites sharePoint

Question

Hello,
  I have read about how to configure My Sites SharePoint from "http://technet.microsoft.com/en-us/library/ee624362.aspx"
I have read the following section : 
Perform these additional steps to configure permissions for users to create team sites from their My Sites to use site feeds
In the Policy group, click Permission Policy.
On Manage Permission Policy Levels dialog box, click Add Permission Policy Level.
Type a name for the permission policy.
Under Permissions, in Site Permissions, select the Grant option for Create Subsites - Create subsites such
as team sites, Meeting Workspace sites, and Document Workspace sites.
Click Save.
In the Policy group, click User Policy.
On Policy for Web Application dialog box, click Add Users.
On Add Users, in Zones select (All Zones), then click Next.
In Choose Users, enter the user names of the users that you want to create team sites from their My Site to use site feeds. If all users can create team sites from their
My Site to use site feeds, click the Browse icon. In Select People and Groups, click All Users, then click Everyone. Click Add, and then click OK.
In the Choose Permissions section, select the name of the Permission Policy created previously.
Click Finish, and then click OK.
I have configure My sites in SharePoint . And I didnot  configure the previous step .
Then I log in by a user . Then he created a personal site . Then He can create a sub site under it .
    So what is the previous section for ?
ASk

Answer 1

By default all authenticated users have the ability to create personal sites for my sites. Did you perform the step to allow self-service site creation? Also, instead of configuring the create subsites permission using user policy I usually control this
at the User Profile Service Level. There is a link in the UPS called Manage User Permissions and you can specify 3 permission levels for all users (Or put different AD Groups/Users here):
From:
http://technet.microsoft.com/en-us/library/cc262500(v=office.15)
Create Personal Site   This permission enables users to create a personal site to store their documents, newsfeed, and followed content.
Follow People and Edit Profile   This permission enables users to follow people from their My Site and to edit their personal profile.
Use Tags and Notes   This permission enables users to use the Tags and Notes feature from SharePoint Server 2010. The Tags and Notes feature is provided primarily for upgrade purposes so that users can continue to access the
tags and notes they created in the earlier version of SharePoint Server. However, you might also use this permission to enable users to leave notes on documents in SharePoint Server 2013.
Regards,
Andrew J Billings
Portal Systems Engineer//MCSA,MCSE
Blog:
http://www.andrewjbillings.com 
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