Creating a calendar event from entry?

Having the following hierarchy I want to select one row and add it as event to a calendar:

- July
. - WED 01
. - THU 02
.. - o 7:30 - 8:30 | Meeting

Selecting the last row should create an event “Meeting” on 07.02., 7:30, in my calendar.

How can this be done?

Thanks!