Let us remove the "Group By" in People Performance Reports
nation.marketo.com/t5/product-discussions/people-performance-report-group-by
Hello!
"Group By" is a feature of People Performance Report Settings that cannot be removed. But in some - actually in most - cases where we have A) Custom Columns and/or B) a Smart List filter on that report, we don't want any grouping and would love to delete it - which we can't.

See also: nation.marketo.com/t5/product-discussions/people-performance-report-group-by
Thanks!