What must a System Admin do to remove a user's access to Smartsheet completely?

To completely remove a user's access to Smartsheet, deleting the user account from the Admin Center is necessary. This action ensures that the user no longer has any access rights to the Smartsheet environment, including all sheets, reports, and dashboards. When a user account is deleted, all associated permissions are revoked automatically. This step is essential for maintaining security and ensuring that no residual access remains after the user is no longer part of the organization.

Other potential options, such as changing the user type to Viewer or revoking sheet sharing permissions, do not fully remove the user's access. A Viewer can still access sheets to which they have view permissions, and merely revoking permissions does not eliminate the user's account from the system. Archiving a user’s activities is also insufficient for removing access since it pertains more to record-keeping rather than user management. For total access termination, account deletion is the definitive action needed.