Users cannot modify reservations after the start time

[JRFarmer]

Users are not able to modify reservations after the start time has passed. Often we want to extend a reservation or end the reservation early to free up the resource, or delete reservation but LibreBooking does not allow users to do this after the start time.

Application admins are able to do this, but obviously we can't give users that permission. Any work-around?

[JRFarmer]

Good example of RTFM. I think "current" is the option I'm looking for.

$conf['settings']['reservation']['start.time.constraint']

When reservations can be created or edited. Options are future, current, none. Future means 
reservations cannot be created or modified if the starting time of the selected slot is in the 
past. Current means reservations can be created or modified if the ending time of the selected 
slot is not in the past. None means that there is no restriction on when reservations can be 
created or modified. Default is future.