if $element->[employee_group] = ""
then (go to $element->[manager_name]
copy $element->[manager's_group] to $element->[employee_group]);

##</code><code>##

Sam Malone,Cheers,Rebecca Howe
Woody Boyd,,Rebecca Howe
Rebecca Howe,Cheers,Rebecca's Manager

##</code><code>##

Sam Malone,Cheers,Rebecca Howe
Woody Boyd,Cheers,Rebecca Howe
Rebecca Howe,Cheers,Rebecca's Manager