Login to Microsoft365 Admin Portal from https://admin.microsoft.com/ From Setting , Click on Domain Click on Add Domain Write down your public domain name and click on Use the domain Select Add a TXT record to the domain's DNS Record Add the TXT value to your public domain's DNS Record. Click on Verify Click on Continue From Advance Option, Select Intune and Mobile Device Management for Microsoft 365. And add the CNAME records to your public domain's DNS. After Adding the record click on Continue. Click on Done while Domain setup is complete Now add new user and assign Intune license to user. From Microsoft365 admin portal, go to User>Active User>Add User Write Down the required information and password and click on Next . Assign enterprise mobile + Security license and Click Next. Click on N ext . If you need to give admin privilege to user, you can assign it from this page. Click on Next. And then Finish Adding. Now the user is ready to use Intune features.