Explanation/Reference:
CD: For each user you must include the user name (like [email protected]) and a display name (like Bob Kelly).
E: To manually add individual user accounts
1. In the Microsoft Intune account portal, click Users > New.
2. Click User to start the New users wizard.
a) On the Details page, complete the required fields.
b) On the Settings page, set the location for the user.
c) On the Group page, click Next to accept the default and assign a license for Intune to the user account.
By default, the check box is selected, which assigns a license for Intune to the user account.
d) On the Email page, specify up to five email addresses to receive notification of the user name and temporary password for the account. Separate multiple email addresses by semicolons (;). When ready, click Create to add the user account to your subscription.
e) On the Results page, you can view the new account name and its temporary password. Intune automatically creates the temporary password.
The new user account now appears in the Users node of the account portal. When the user signs-in for the first time, the user must specify a new password for the account.
Reference: Set up Microsoft Intune
https://technet.microsoft.com/en-us/library/dn646983.aspx#BKMK_AddUsers