You cannot create or make changes to PivotChart reports in a shared workbook. To make a copy that you can edit and rearrange, ...

You cannot create or make changes to PivotChart reports in a shared workbook. To make a copy that you can edit and rearrange, paste the PivotTable report that the PivotChart report depends on into a workbook that is not shared, and create a PivotChart report from it.