Only owners and admins can add members to a team.

1) Click on your user icon at the top of the page to open the dropdown menu and click on your "Settings".
2) Click on the HiNative Trek tab.
3) Click on the "Members list" tab in the "Team" section.
4) Enter the email address of the person you would like to add as a member and click the orange "Add" button.
5) An email will be sent to the address you entered with a link to complete registration for that user.