[curt.clifton]

Some people use the estimated time field to record actual time when they check off the task. The KranK dashboard widget will do that for you, or you could do it manually or use an Applescript. A future release of OF will include metadata columns (like in OmniOutliner). With those you could add your own actual time column.

To view completed actions grouped by when they were completed, go to Context mode, turn on the view bar, and set it up like this:


You can expand/collapse the groups to display just the time periods you are interested in. Then use Perspectives --> Save Window as New Perspective to save those settings for later use.