Through the “Organization Settings” Page:
1. Click on top right drop-down and select "Organization Settings.”
2. Go to “Members” tab
3. Click Add a New Member.
4. Enter Email and select a user role. Please note, multiple email addresses can be added at the same time.
5. Click the" Add 1 Person" button.
6. On the same page, find the new user and check the box next to the Team name they have permission to see.