I see you have a fixedColumnsLeft parameter. I’m assuming this means you either have now or plan in the future to have a fixedColumnsRight. Does it exist now? I have tried it myself and it does not appear so.
we do not support it yet. Till now we have covered all the parts (left, top, bottom) beside right. I hope that it will be added in the future, however, now we have other goals.
I created a feature request on our Github board and once I get any updates on that topic I will notify you.