Report to display user role percentages

Hi WF Community,

Does anyone know of a report or view whereby I can see users roles and percentages (per role, if they have more than 1 role)?

I noticed in the API Explorer that there's a User Role object with a timePercentage field. Wondering if this is the right one? I tried creating a view on the Users list, adding a custom text mode column, and referencing the above field as a collection:

displayname=Role Percentages

listdelimiter=<div>

listmethod=nested(USRROL).lists

textmode=true

type=iterate

valuefield=timePercentage

valueformat=HTML

This doesn't seem to produce any values.

Thanks.

Nick