grid arrangement

I’m not sure exactly what you want. A grid is like a table, with a certain number of rows, and each row has a number of cells. Your site is showing a 2 by 2 grid: 2 rows with 2 cells in each row. Do you want one row with four cells side by side? You can control the layout by going to Featured Posts Grid from your admin dashboard (look to the bottom left).

If you have other questions about the featured images, you should post them on the Featured Posts Grid support page (although it doesn’t look like the plug-in author has been responding to questions lately).