Log in to the CMS and select Team Members and click the team member you want to update.
From here you can change the Team Member details. Including their Name, Job Title, Contact Details, Feature Image etc.
You can also update the Member Intro (this is usually beside the member contact details and image)
And you can update the Member Bio (this is usually below the member contact details and image)
Other parts that can be edited are the Large Feature Image (usually the single page image)
Client Logos (if this is setup on your template)
Testimonial Link and Post by consultant (if this is set on your template)