Hi @SDI,
In eazyBI are available two measures, “Hours spent” represents logged hours on an issue itself and “Hours spent with sub-tasks” represents logged hours on an issue and its sub-tasks.
There are more details on each predefined measure: https://docs.eazybi.com/eazybijira/data-import/jira-issues-import/jira-core-measures-and-dimensions.
For your report, you might want to use measure “Hours spent with sub-tasks” and filter data by Issue Type of parent issue, in your case Project. Then measure will return logged hours on Project issues as well as on Sub-tasks under project issues.
Best,
Zane / support@eazyBI.com