How to move/copy an activity
Menu:
1. Mark the activity you want to move.
2. Press the Ctrl + X or right click with the mouse and select Cut Activity from the menu.
The activity disappears from the calendar/work plan.
3. Select the right date.
4. Press the Ctrl + V or right click with the mouse and select Paste Activity from the menu.
The activity will be placed in the work plan on the same start-and end time.
If you would rather wish to copy the activity, right click with the mouse and select Copy Activity from the menu (or press Ctrl + C). Then follow points 3 + 4 (select Paste Activity).
Drag and Drop:
The other option is to drag-and-drop activities. Here are some of the choices: