Final answer:
To flag a household member or ACG in a portal, you can use the flagging feature to report any issues or concerns to the administrators or moderators.
Step-by-step explanation:
In the context of a portal, flagging a household member or ACG typically refers to notifying an administrator or moderator about a particular issue or concern regarding that individual.
This can be done by clicking on a designated flagging button or link within the portal interface. For example, if a household member or ACG is displaying inappropriate behavior or violating portal rules, the flagging feature can be used to report the issue and bring it to the attention of the appropriate authorities.