plot grouped column-indexed data plot with ORG-25340.ogwu
Copy page with graph created in Step 1
paste to PPT
double click graph in PPT to open Origin (steps 2-5 is used to set up the data without lock, and you can click lock icon to select Recalculate - None to get a same data)
go to output sheet and select 3rd row, delete row
==> graph is empty, but there is still plot in object manager