Prompts for Power BI

Dear community,

My company has just switched over to v8 and we are in the works of switching over from a current rest API to the Power BI connector.

Is there any guide or thread that goes through how to set the prompts for the connector? 
I get a little bit confused as to what needs to be filled in. For example, the prompt asks me to fill in "Entity" and many other dimension parameters - however, our business consists of many, many entities and I would not like to create one data connection for each one of them. Same goes for "Account" and many other fields, none of which I am able to leave blank.

Any advice? 
Rasmus