SharePoint Online sites are organized into site collections. A site collection manages access rights and characterization templates for all sites in the site collection. You can structure sites hierarchically. There is always a site labeled as root site in every site collection. The other sites in the site collection are sorted below the root site.
To edit site properties
- In the Manager, select the SharePoint Online | Sites category.
 - Select the site in the result list. Select the Change master data task.
 - Enter the required data on the master data form.
 - Save the changes.