A method for managing a plurality of access control devices is provided. The method includes at a backend server, receiving a request to schedule a first task of the at least a subset of tasks. The backend server identifies one or more access control devices that a non-occupant account is to be granted credentials in order to complete the task. The backend server then provisions credentials for the one or more access control devices associated with the first task to the non-occupant account selected to complete the task.