RE: Need to create a search for projects with only business manager as resourse assine
need list of project in NetSuite where project resource assign is only Business manager.
Means resource role should be only business manager none of other resources should be assigned to that project
In your Criteria set the Project Resource = Business manager. Then add summary functions to your results to Group by Project and Count by Project Resource. Finally in your Criteria on the Summary criteria add Count of Project Resource = 1.