I need to create a GUI for a seating plan and I plan on using several rows of checkboxes to create a layout.

The only problem is that I don't know how to code these checkboxes over several rows.

Also I need to generate this checkbox layout from a prespecified number of checkboxes for each row. So I need to create some sort of loop that will continue creating checkboxes on that row until all the checkboxes are created,...