I'll just throw in that I've tested this but found it didn't find to work
well enough to use, but that's about footnotes.. both placement and
numbering.)
However, I tested this method, I found that defining three columns provided
the control I needed for the gutter (area between the columns) better than
trying to manage the gutter within the LO interface. That is, I used column
2 for entering the gutter dimensions and tole LO to have no space between
columns, and the table display seemed to be less inconsistent.
I also found that during testing, it was much easier to keep the text in LO
Calc in 3 columns, and make edits there, then paste the entire document
into LO Writer as a table for formatting. This would make defining the
language very easy: Select the entire column and in tools --> language
choose the language for the column.