According to ISO/IEC 27001:2022, clause A.11.2.9, the organization should protect mobile devices and media containing sensitive information from unauthorized access, loss or theft. The organization should also implement appropriate encryption techniques and backup procedures for such devices and media. Therefore, leaving laptops in locked bins during weekdays or weekends is not a secure practice, as it exposes them to potential theft or damage. Laptops should be stored in a safe location when not in use, such as a locked cabinet or drawer, and should be protected by passwords or biometric authentication. Reference: CQI & IRCA Certified ISO/IEC 27001:2022 Lead Auditor (Information Security Management Systems) Course Handbook, page 58; [ISO/IEC 27001:2022], clause A.11.2.9.

Information is an asset like other important business assets, as it has value to an organization and consequently needs to be protected. Information can be in any form, such as electronic, paper, or verbal. Information security is the protection of information from unauthorized access, use, disclosure, modification, or destruction2. Reference: ISO/IEC 27001:2022 Lead Auditor (Information Security Management Systems) | CQI | IRCA

The audit procedure used here is "analysis." The audit team analyzed server logs to verify if they can be edited or deleted, focusing on evaluating the logs' properties and the controls over their manipulation to ensure they comply with ISO/IEC 27001 requirements.
References: ISO 19011:2018, Guidelines for auditing management systems

Explanation
The reason for the classification of information is to structure the information according to its sensitivity.
Information classification is a process of assigning categories or labels to information based on its value, sensitivity, criticality and legal requirements. Information classification helps to determine the appropriate level of security controls and handling procedures for different types of information. Information classification also facilitates the communication of information security requirements and expectations among internal and external parties. ISO/IEC 27001:2022 requires the organization to classify information in terms of legal requirements, value, criticality and sensitivity to unauthorized disclosure or modification (see clause A.8.2.1).
References: [CQI & IRCA Certified ISO/IEC 27001:2022 Lead Auditor Training Course], ISO/IEC
27001:2022 Information technology - Security techniques - Information security management systems - Requirements, What is Data Classification?

This is a minor nonconformity. The backup frequency not adhering to the company's procedure of daily backups but occurring once a month represents a deviation from established processes, yet it might not immediately impact the effectiveness of the information security management system.
References: ISO/IEC 27001:2013, Clause A.12.3 (Backup)