Design a system that integrates [CompanyName]’s access control system with the visitor scheduling platform to enhance security and efficiency. When a [Visitor] is scheduled, the system should automatically generate and grant access based on the visitor’s credentials, such as [VisitorType] (e.g., VIP, contractor, vendor), and the scheduled visit time. The system should ensure that access rights are activated only when the visitor arrives and automatically expire after the visit duration has passed.