Constant sized Column bars in MVVM

Hi,

I’m trying to add two column series with a different number of data points with the same width per column. There is a suggested solution here:

https://www.scichart.com/questions/wpf/constant-sized-column-bars

but I’m doing it from ViewModel.

So, if I understand it right, I can override GetColumnWidth() in FastColumnRenderableSeries in the new class ConstantColumnRenderableSeries, but how can I add ConstantColumnRenderableSeriesViewModel (overriding ColumnRenderableSeriesViewModel), so that once I add an instance of this newly created class ConstantColumnRenderableSeriesViewModel into RenderableSeries it will add ConstantColumnRenderableSeries to chart and render it?

Thanks in advance!