What are the requirements of the visitor's organization when an employee wants to participate in a classified visit?

When an employee wishes to participate in a classified visit, the visitor's organization typically requires that the employee possess the appropriate security clearance relevant to the classification level of the information being accessed. Additionally, the employee may need to submit a formal request or justification for the visit, and comply with any specific security protocols established by the organization. It's also essential that the employee undergo any necessary training related to handling classified information and adhere to confidentiality agreements.