Connections > Microsoft Sharepoint Online connection properties
  

Microsoft Sharepoint Online connection properties

Create a Microsoft SharePoint Online connection to connect to Microsoft SharePoint Online and read data from or write data to Microsoft SharePoint Online. You can use Microsoft SharePoint Online connections in synchronization tasks, mappings, and mapping tasks.
You can create a subsite account in the Microsoft SharePoint Online application and specify the URL of the subsite account in the connection properties. Subsites enable you to categorize data as per your requirements.
For more information about how to create a subsite Microsoft SharePoint Online account, see https://support.office.com/en-us/article/Create-sites-and-subsites-FD5031E1-162F-436E-95C7-3946F034D350