Hi Robert,
I'm no expert and we are having our struggles with JS on 14.2 - hopefully, will resolve most of them when upgrading to 15.1 or 15.2.
In the measures area, try looking for Team based metrics. I think that Investment metrics lack a relationship to resources, therefore, you get the totals from the investments. Likewise, resource metrics lack a relationship to investments/projects. Its the Team based metrics where the link between projects/investments and resources lies.
Also, seems that the Project Domain has more metrics related to all the different types of hours (assignments, actuals, allocations) that the Investment Domain. Don't know why it's like this - perhaps because one can only allocate to Ideas, Other Work, Product....? Whatever the reason, Project Domain appears to be more detailed in this respect.