The GUI only supports one user in SC 3.4.0. We are working on user tenancy so look for more on that in the future releases.
Your request is for a read-only user?
Idea we are working on is allowing for SC admin user (like we have now) and a tenant user. The tenant user would only see their configurations but could manage them and take action where admin user could see all configs. Would this meet your requirement?
Regards,
Keith