Final answer:
End users can report an incident on a service portal by navigating to the specific section for incident reporting or support and filling out the necessary form with incident details.
Step-by-step explanation:
When an end user wants to report an incident on a service portal, they typically need to follow a certain process. The specific steps may vary depending on the particular service portal being used, but generally, the user will navigate to the portal and look for a section specifically designated for incident reporting or help desk support. This is often labeled as 'Report an Incident,' 'Help Desk,' 'Support,' or something similar. Once there, users can usually fill out a form with details of the incident they are experiencing.