How can I get Task Assignments on PowerApps

We use Project For the Web and I am developing a PowerApps canvas application for advanced functionality. I would like to display a table with

* Task Name

* Resource Name (assignment)

According to the data schema there should be the "Bookable Resource" table on Dataverse, but for some reason I cannot find it or perhaps have no access

Please advise how I can get the Bookable Resource table on PowerApps and/or get assignments by another way.

I appreciate your help.

Best regards,

Slava