I've got a quick question about ProjectLibre.  I want to set an absolute date for the Finish column and basically work backwards from that.  For example; an entire project has to be completed by, let's say, October 1.  I'd like to set a hard date in the Finish column and then have ProjectLibre calculate, based on the number of days I enter, the absolute last day a task would have to be started to meet the Finish deadline.

Is that doable the way I'm describing it?