Click Admin at the top right of the page.
Click +New User.
Under User Selection Method select Create a new user for the account and grant access to this profile to add a user who does not belong to the account.
Enter the email address for the user you want to add. The email address must identify a Google account. You can enter multiple, comma-separated addresses.
Select the role for the user. User has read-only access. Administrator has full access.
Click Create User.
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