Create a program contain several courses

Hi everyone!
I have tried to look for answer in documentation and Discourse, but still cannot find the answer. So would like to seek for help here.
I am trying to create a program which includes few courses, according to the documentation Create Program Types, I need to sign in Sign into the Discovery Service Django Administration site, but I cannot figure it out what is “discovery-baseURL”.

I have check similar topic Programs in Open edX, but still don’t understand.
Any help from the community would be greatly appreciated.