Create New Team Member
To add new team member go to Team->Add New.
Set member name and add some description in editor window.
Next step is attach featured image to post. Try to keep all members with featured images. It is better user experience approach.
There is also available personal information meta box for description of member position in your company and links to social networks.
Add Team Section on Page
To add Team element to page choose it from elements list and add to some row.
More details about customizing team module here.