Add External Users to SharePoint
If you have purchased only SharePoint and you need to add your users to the account or you would like to add users to your SharePoint site that are not on our email platforms, log into the Control Panel, and perform the following steps:
1. On the Home page, click the Microsoft SharePoint link/box title.
2. In the Users section, click the Manage users link.
3. To add an individual user, click the Add User button. To upload a CSV file with multiple users, click the Add Multiple Users button.
4. If you selected Add User, enter the required information.
5. Click the Save button.