How to check SLA configuration in ITSM?

Hi Experts,

I need urgent help.

I started working on ITSM, In my current account we are using ITSM and its configured by SAP.  SLA's are working fine for all type of documents.Now we want to do some enhancements in that. But problem here is I could not find SLA definition (Service and response profiles).

I went to SPRO settings to check Service and response profiles nothing is maintained.  

Can you please help me how I can find SLA clock settings in this case.

Thanks.

Pradeep.