Calculated Columns in Charts

Description -

Why is this feature important to you - Some objects do not have the ability to attach custom forms to them. For e,g, Timesheets. Hence, we need to use Calculated column in our reports in this case for custom calculations. But these custom columns are not referencable in charts. We need to be able to view charts for custom calculations such as "Utilization %" for different groups and time. 

How would you like the feature to work - Calculated Columns can get used to group the reports and can also be used in Charts to group/summarize data.

Current Behaviour - Some objects do not have the ability to attach custom forms to them. For e,g, Timesheets. Hence, we need to use Calculated column in our reports in this case for custom calculations. But these custom columns are not referencable in charts.