The IT security guy here wants to review the splunk roles/users. I there any way by which I can give him access to Access Controls without giving the admin role.
For a self-service solution, maybe giving him read access to Splunk on Splunk would work; its Configuration File Viewer feature is great and it would allow him to see config files for search peers as well.
However, it's not clear whether some of the scripts in S.o.S might expose some undesirable functions; maybe someone from Splunk can comment on how safe it is to present S.o.S to non-admin users. On my installs it defaulted to "Everyone" read/write; I later changed that, but hopefully it is safe by default.