Testing Identity Provisioning Service on API Business Hub

We have IPS proxy configured for Concur backend system and I am trying to create an environment on API Business Hub, to test Identity Provisioning Service "Users"

https://api.sap.com/api/IPS_Proxy/resource

I have Client ID and Client Secret and not sure how to fill Consumeraccount and Provideraccount?

Can someone please guide me how to fill these fields or point to documentation or example? Thanks!