Where can you modify a user's security groups in account management?

Modifying a user's security groups is a specific task typically located within user account details. In this case, the user properties window is designed to provide information and options related to individual user accounts. Within this window, the "Member Of" tab specifically lists the security groups the user is part of. This is where administrators can add or remove the user from specific groups, adjusting their permissions and access levels accordingly.

The other options do not align with this specific task. The Account Settings menu primarily deals with broader settings for the account or organization as a whole rather than specific user management tasks. The Security Preferences panel often contains options related to system-wide security settings and may not provide direct access to modify individual user group memberships. The User Management dashboard, while it does relate to user oversight, usually presents a summary of users rather than detailed properties and settings for each user. Therefore, the user properties window under the "Member Of" tab is the correct location for managing a user’s security groups effectively.