Option to suspend a recency.

We monitor our flying training areas through 'Company Recency'. Each training area is subject to a 12 monthly review, however within that 12 months flying training areas are taken offline for short periods - e.g. Due to animal culling. We'd like to be able to suspend the recency (shows red / expired and therefore not to be used) for the period of the cull and have the area automatically come back online when the notified dates had passed.