You can create an account for a team member by going to your account settings section and clicking on the "Team/Rates" tab. You'll see a button in the upper right corner that let's you add a team member.
Input the team member's details and set their access permissions. This is where you can limit the access your team member has to various sections of the company account. You can always come back and change these settings later if needed.
Once you have set up your team members they will receive a welcome email from Ivy to the email address the admin set them up with.