As an admin or editor you can invite a new team member to FleetOps using the following steps:
Click on the settings icon at the top right of the menu.

Go to 'Users' and click on the '+ New User' option

Enter all required details: new user's email and role
Invite multiple users in one flow by clicking on: Add another invitation.
If you added a new field by mistake, cancel it by clicking on a cross on your right hand side.
Click on 'Send Invitation' once you are done.

Note: Invitation links expire in 14 days. You can resend invitations after they have expired