ServiceDesk - API - Extending
It is possible to extend the API by including a custom assembly containing additional controllers in the Extensions folder under the bin directory. Any controllers found here will be registered as endpoints. There are a few things to note regarding these extensions:
SMP - ASDK - Time Critical Management
IT Management Suite (ITMS) 8.5 Documentation
DOC11076
https://support.symantec.com/en_US/article.DOC11076.html
SMP - Primary User
The Symantec Management Agent (SMA) calculates the Primary User based on the length of time a user has been logged onto a machine.