To change the due dates of tasks, proceed as follows:
- Select one or more tasks
- Choose from the menu Plug-Ins -> ProductivityTools -> Set due date.
- Click on the desired number of days to move the selected tasks. You can define your own time intervals under Set Due Date -> Preferences.
If you use this function frequently and like to work with the right mouse button, you can configure the Set Due Date function for use in the context menu.
This tutorial explains how to turn a menu bar function like Set due date into a right mouse button action.