I would like to manage the resources of the project in Visualization (Beta)..

I have linked some tasks to resources in the column "resources" of the planning. But when I open "Visualization (Beta)", in the tab "resource allocation", It is indicated "NULL" as resources of the tasks.

I can not manage the resources.

How to proceed ?

Thank you

You can create your own charts just for resources. There is a edit visualization button inside the (Beta) and there is an add viz as well. 

Are their any training videos in creating new Vis charts,  I have researched but have been unsuccessful in finding. Trying to see if I can establish work burn down by resource