timer function for Luciole for time lapse photography

An adjustable timer that makes Luciole take pictures at user specified intervals. The timer would accept delays of seconds, minutes and hours. The timer should be adjustable while the project is running. If more than one camera was being used each camera could have different times set on them or be manually triggered. A counter would count down to zero during the interval to indicate it is on and to let the user know when the next picture will be taken.