When a coach is trying to send the Coaching Report to the Rep an error occurs: You do not have permission to send the Coaching report to the employee.
Be sure the Coach has read Field Level Security (FLS) permission on the following fields:
The Coach should have edit FLS permission on the Survey_Target_vod.Sent_To_Employee_Datetime_vod field.
Full Access should be granted at the Profile Level or through a Permission Set.
CRM Help Documentation: Advanced Coaching Report