Final answer:
The sharing setting that allows a user to manually share their own user record with other users is called manual sharing. It enables users to extend access to their records on an individual basis, providing flexibility beyond the default organization-wide settings.
Step-by-step explanation:
The sharing setting that allows a user to manually share their own user record with other users within an organization is known as manual sharing. Manual sharing is designed to give users the ability to extend sharing access to their own records on a case-by-case basis. It is especially useful in scenarios where a user needs to share specific records with others who might not have access through organization-wide defaults, roles, or sharing rules.
To manually share a record, a user typically goes to the record they wish to share and looks for the 'Sharing' button or link. This initiates a sharing dialog where the user can specify which other users, groups, roles, or territories should have access to the record and at what access level (e.g., Read Only, Read/Write).