Simple editing problem for calendar

you can move a calendar entry with a duration of several days by moving it with the mouse.
then both start and end are moving.
can i just move the start and keep the end?

You can “dblclick the calendar event to open it”, and then adjust the start and end dates.

1000003631

i’ve found what i was looking for.
click in the region where both is written … it moves both, start and end
put mouse on the line of beginning … you only move the start. the end stays the same.