A computing system comprises at least one processor memory. The at least one processor, when executing a hosting application loaded in the memory, is configured to perform several acts. These acts include receiving data generated by a scheduling application, wherein the data indicates that a file hosted by the file hosting application is referenced in a meeting object generated by the scheduling application. The acts further include responsive to receiving the data, assigning metadata to the file hosted by the file hosting application, the metadata comprises the data generated by the scheduling application. The acts also include at a threshold time prior to the time when the meeting represented by the meeting object is to occur, causing a notification to be transmitted to a client computing device from which credentials of a user in the users have been received, the notification transmitted based upon the metadata assigned to the file.