In reply to postanote:
In reply to Daniel Felix:
Understood. But as per the links. Since, you are on SPO, then there is stuff you have to download and install first. Microsoft Online Services Sign-In Assistant for IT Professionals RTW 'microsoft.com/en-us/download/details.aspx?id=28177' Connect to SharePoint Online PowerShell 'technet.microsoft.com/en-us/library/fp161372.aspx' Install the SharePoint Online Management Shell by downloading and running the SharePoint Online Management Shell. 'go.microsoft.com/fwlink/p/?LinkId=255251' You only need to do this once for each computer from which you are running SharePoint Online PowerShell commands. To open the SharePoint Online Management Shell command prompt, from the Start screen, type sharepoint, and then click SharePoint Online Management Shell. To connect with a user name and password 1. Fill in the values for the $adminUPN and $orgName variables (replacing all the text between the quotes, including the < and > characters), and then run the following commands at the SharePoint Online Management Shell command prompt: $adminUPN="<the full email address of a SharePoint Online global administrator account, example: firstname.lastname@example.org>" $orgName="<name of your Office 365 organization, example: contosotoycompany>" $userCredential = Get-Credential -UserName $adminUPN -Message "Type the password." Connect-SPOService -Url https://$orgName-admin.sharepoint.com -Credential $userCredential 2. When prompted with the Windows PowerShell credential request dialog box, type the password for the SharePoint Online global administrator account. Introduction to the SharePoint Online Management Shell 'support.office.com/en-us/article/Introduction-to-the-SharePoint-Online-Management-Shell-C16941C3-19B4-4710-8056-34C034493429'