Typically you'd use this with the list component, which would automatically read from members and pass this component the parameters. But you can also use it stand-alone to manually display individual members:
Lookup member details from members by filename, without the .md extension.
Visual style of the portrait. Set to small to make it a bit smaller, or set to tiny to make it very small and horizontal layout.
name / etc.
The same parameters outlined in team members. Retrieved from lookup, or passed automatically from list component.