Display in Summmary Mode

Hi guys!

I am new to zoho but I'm loving every minute of discovering it! Great work!
For now I have a problem with the display in summary view. In the EDIT GUI I selected SUMMARY DISPLAY TYPE and I need to show only one record per row but it seems that I can not modify that because it goes back to 2 records per row and that is how it displays them. Is it something I miss?

Thanks