How to access data using Postman from Advanced API

Hi,

I am well versed with MYOB Business APIs, where as a developer you create an APP which has Client ID and Client secret. You follow the documentation steps, use the postman collection and access the reports (P&L) etc. However, after switching to Advanced, I am lost. 

Can I get some information on how to use POSTMAN to extract data from MYOB Advanced?