When checked, the plugin will retrieve additional fields e.g. Job Title, Office Location, Mobile Phone and Business Phone Numbers from Microsoft Graph and adds these to a new Office 365 Profile Information user profile section (Directory Information in Buddy Press).
Check the box to retrieve / update additional user information from Microsoft Office 365 (Graph) when a user signs into your website.
The fields that will be retrieved are configured through the Extra User Fields setting.
For this feature to work correctly, please also ensure that you have created an App Secret and make sure that you have granted at least User.Read permissions for the application you registered in Azure AD.
As theme developer you can of course access and use information by accessing the corresponding user meta fields (jobTitle [string], officeLocation [string], mobilePhone [string] and businessPhones [array]).