NMS should be able to store and display project configurable reasons and the start and end time for which crews are tagged as unavailable using the integration with OFS.
The business case around this is :
There is value in the NMS operators being able to see the reason why certain crews are unavailable and the duration (start time/end time) for which they will be unavailable as communicated by OFS. This will help the NMS operators make better informed decisions on planning crew dispatch.
This information can possibly be displayed in the Crew Actions table as additional columns.