Google Sheets - Allow only one checkbox to be checked when the boxes are placed in specific cells across a wide range

I need a simple script for Google Sheets to allow only one of 6 checkboxes to be checked at a time. The end user will check a checkbox and should see the one they checked before turn unchecked or FALSE when they check the new one. The "problem" for a newbie like is me that the checkboxes will be asymmetrically located. They are in cells D14, D30, J14, J32, P14 and P30. I also need to duplicate this sheet a number of times, so preferably the script should work on any of the duplicates I make the same way. The cells will always be these six cells in every sheet.

I've seen many posts about this subject and tried to use the example scripts to my problem without success, so I want to ask specifically about my spreadsheet.

Here is a link to a draft version of my sheet with the locations of the checkboxes:

https://docs.google.com/spreadsheets/d/1PtxetS-Gyv7LyMD19yF3NuWZ24RvqUjyK42SmQTttiU/edit?usp=sharing

Thank you, Lassi