Some users would like to know how to change the homepage image (hero image) and other branding of Agent Workspace
Currently, Look and Feel of Agent Workspace cannot be modified. It is not designed to be modified by users.
For example, the Image on the workspace homepage, Color schemes etc
It is recommended to submit an enhancement request for the developers to consider it for future releases.
Steps to create Enhancement Request can be found here: https://hi.service-now.com/kb_view.do?sysparm_article=KB0547257