Users can be added one at a time or using an excel sheet.
To add users one at a time:
1) Click on the Add User button in the "New Users" section
2) Enter the user's First Name, Last Name and the user's email.
3) To add the user as an Admin user, check the Administrator box as true.
To add multiple users at once you need to Create a CSV file with the users' information in the Sample CSV format (A sample CSV file is also available for download on the Admin console):
1) First click "Download Template" button in the "New Users" section to download the CSV file, then fill in all the users' data you want to add (name, email, etc.) and save the file on your desktop. Then click "upload" and select the CSV file.
2) Email is a required field