You need to sign off the encounter after the completion of Challenge Tests.
 
  - Open NextGen® Enterprise EHR.
 
  - On the Testing - Allergy template, expand the Challenge Tests panel.
 
  - Enter additional information in the Comments field. 
 
  - Select the Physician sign off checkbox.
   
NextGen® Enterprise EHR fills the associated field with the current user's information and the Date and Time fields with the current date and time.
   
 
  - Save the template.