The practical function of Moving an activity by simply dragging and dropping to another day or hour will make your daily work with Activities in the CRM Calendar easier.
The calendar allows you to move activities at half-hour intervals. Of course, you can easily set the exact time (for example, 9:42) in the activity detail.
In a similar way, you can shorten or extend the duration of an activity. Just drag the bottom edge of the activity and move it up (this will shorten the duration) or down (this will increase the duration of the activity). Change is again possible at half-hour intervals; you can then set the exact time in the activity detail.
All-day and multi-day activities can only be moved within a multi-day line. You cannot adjust the duration by dragging the mouse up or down.