Bright Analytics will automatically try and resize statement reports by taking into account the number of metrics you have selected, the number of period comparisons and the number of paired metrics.
If however, you would like to change the layout of the statement you can choose you many metrics appear on each row of the report.
You can find the option to adjust this in the visualisation widget, under 'Max quantity of tiles per row'. By selecting this, it will reveal a drop down list:
Here we have a statement report with 8 metrics. We will modify the report to first have 3 tiles per row (Option 1) and then to have 5 tiles per row (Option 2).