You already have 2 subgrids called status & policies. And the 2 columns section is already modified into 2 columns. Good.
To insert another subgrid, in the top ribbon click Insert - subgrid. Then configure the entity & view. Just replicate the other settings like view selector, Index, chart, no of rows, show label, etc. from existing left subgrids.
If you want to add more fields, choose it from right panel & drop wherever you want.
If you want to rearrange simply drag & drop when you see red line. Even up/down arrow will work.
