To add team members or managers, go to your organization page, then click: Team → Invite -> Enter email -> Choose a role -> Send
Roles
When inviting new people, you can add them as either a Reader, Member or a Manager.
Managers can do everything
Members can spend, but not send money, and can't edit the organization's settings.
Readers have read-only access to an organization.
Click on the link to learn more about user roles