How to display reports of Common Model Data Business Entity ?

There is an explanation here https://powerapps.microsoft.com/en-us/blog/cdsconnectortopowerbi/

At the moment what you can do is very limited.  Until we can create our own Perspectives it is a little use unless you run a business selling products to customers.  "Soon, we will also enable you to define your own perspectives or, extend ready-made perspectives by adding your own entities".