Thank you for writing.
Currently, these features are not supported by neither RadPivotGrid nor RadChartView. However we have a feature requests for such functionalities in our Feedback Portal
. You can track the items for status changes and add your vote for them here
Also we have a feature request for a component which will allow editing excel spreadsheets. The item can be found in the following page: UI for Winforms Feedback Portal - ADD. component which allows importing/exporting and editing Excel spreadsheets
Do not hesitate to contact us if you have other questions.