Delete efforts of multiple tasks at once
It would be usefull to have a button in toolbar, that deletes all efforts of all selected tasks (multiselect) at once. I use Task Coach as a daily stop watch for tasks, because I have to switch between these tasks steadily. Once a day I have to reset all efforts.
Vanda Ribeiro Abraços commented
You can do this with an Effort For Selected Tasks viewer. Just add it, select the tasks you want, then select their efforts and delete them.