1. Please login to https://admin.microsoft.com using the credentials which we have sent you in the email.
2. Once logged in click on Users and then Active Users. On the top, you can see Add User option. Click on that and Add User window would be opened. Follow the prompted window and complete the user setup.
3. Once the user is added, you can do multiple operations for the user like Change Password, Change License, Assign License and Add Aliases, etc.
If you have any other queries or need any support, please contact our support here.