Adding a new member to your Ramp account is easy - just go to https://ramp.com/team, click on the "Invite People" button on the right side of the page, choose their role, enter their email address, then submit the invitation.
Once the newly invited team member accepts the invitation, they'll officially be a part of the team!
When inviting a user, you must choose the role. For details regarding roles, check out this article.
You can invite users with specific cards, or with no cards. Users without cards can request to spend after accepting their invite.