How do I add a Calendar Picker in Calc?

Pretty straight-forward - how do I add a pop-up calendar-picker in LibreOffice Calc?

I want users to click on a blank cell, causing a calendar to pop-up; users would then select a date/month/year with their mouse, which in turn cause the pop-up calendar to close and then date to be automatically entered into the previously-empty cell.

There is an extension for it:

edited 20150902

Perhaps something like in this links could help to run the extension without call it with the keyboard:

The extention requires Ctrl+Shift+F2 or Tools/Addons/Calendar to open. I’m looking for something like the author described. A calendar pop-up that is opened when cell is selected and closes when the date is entered (or closed manually).