title: subsite owner cannot create subsite, SharePoint 2013
body: <p>I have a sub-site created under my 2013 SharePoint Site collection. The Sub-site has a unique permission, but the owner of the sub-site is not able to create a sub-site under the sub-site he has full access to. I have added the user to the Site Collection Visitors and Members groups, but he is not still able to create sub-site. The Group he belongs to already has the permission of:
  - Manage Permissions
  - Create Subsite</p>
  
  <p>Any help is much appreciated.</p>