When requesting a new event, it is desirable to control the window of time in which a request can be made, limiting the risk of last minute changes or requests - or notifying the user that the potential exists that their request might not be approved based on approval policy. This functionality exists in travel sites today as shown in the screenshot below.
Additionally, to support this feature, it is desirable for approvers and requestors to receive time-sensitive notification updates including:
  • When approval requests are near timing out
  • When someone makes a time-sensitive request