[mkoistinen]

An excellent example of the "problem" is when you have a checkbox column for a 3+ level row document.

If you only want the checkboxes to appear for, say, rows with level of 2, you're out of luck.

Incidentally for anyone reading this looking to do it, if you want checkboxes to only appear for the DEEPEST row-level, you can simple use the Summary: Hidden option on the column.