Changing the Layout of a Corrplot/Cornerplot Outputs

Hello Julians:

I am working with dataset similar to
the commonly used for IRIS as:

using RDatasets, 
using PlotlyJS, 
using StatsPlots
   const stp = StatsPlots
iris = dataset("datasets","iris")

@df iris stp.cornerplot(cols(1:4), grid = false)

The output from above should render:

I would like to only visualize a slice of the out so that
the content highlighted in red is visible:

How might one approach this?