I have a Google Sheet file linked to a Google Form, that I use to record registrations for classes by different teachers. Inside of it I create extra columns that mark "X" in a row, when someone registers for that particular class, using an =IF function. I'd like those "X"'s to be checkboxes so that I can check attendees in the sheet itself as they arrive, but there is no method I can find for a function to output a tickbox into the cell and I have next to no knowledge of JavaScript.
Example Sheet: https://docs.google.com/spreadsheets/d/19BUkEfo8dWcAfPDhmhBTuhC1-V-QROlfF0pWH75c9VA/edit?usp=sharing
Ideally, I'd have a custom function that basically does the same as my =IF but inserts a checkbox instead of writing "X" (ie. if cell A contains text from cell B insert checkbox, else leave empty).
Alternatively I also found this solution to a similar problem, that I think would work, but I don't know enough to tweak it to my needs. This way I'd keep my sheet as is and the script would just replace the X's with checkboxes?