Importing users from Office 365 groups
It is possible to import users from Office 365 or using a CSV from, with or without password, from Office 365 and Office 365 groups. To import users from Office 365 groups, click “Import”.
After clicking “From Office 365 groups” you will see a list of your Office 365 groups. Select which groups you want to import the users from and click “Import”.
Note: Users from distribution lists and/or mail-enabled security groups won't be imported.
The users are now successfully imported, click “User management” to see the active users. By default, users will receive a registration email.