Creating a list (Canvas App) of assigned tasks for each resource in P4W Project accelerator

As P4W is built over Dataverse, I'm trying to develop a Canvas App that lists the assigned tasks for each resource by retrieving it from the Dataverse table (Resource assignment) as shown in attached snapshot.

But, I'm facing an issue that the assigned resources comes from a lookup field that's referencing a blank table!

Any one can help?

Btw, I've installed P4W on personal Environment, and upgraded it to Project accelerator.