Install
https://libreoffice.org/ instead of OpenOffice or add a macro to OpenOffice. LibreOffice has a built-in shortcut command for this.
A Python macro of mine inserts the current timestamp (date+time) to the active cell:
https://forum.openoffice.org/en/forum/d ... p?id=29462 Open the downloaded zip file. It contains only one file TimeStamp2Calc.py
Open the file explorer and enter %APPDATA% as folder address. From there navigate to folder OpenOffice\4\user\Scripts, add a folder named "python" and put the file TimeStamp2Calc.py into that directory.
Open any Calc document.
Tools>Customize... tab "Keyboard"
Choose a free shortcut.
In the "Category" box navigate to OpenOffice_Macros>My_Macros>TimeStamp2Calc and choose NowToActiveCell.
Click the Modify button and then OK.