AX – D365FO – Define the number of columns of a Form (align the controls)

In a form we want to add 3 controls (1 tree and 2 grids), but this form appears very ugly because the number of columns has been set to 2

If you want to align these 3 controls in a unique row just set the number of columns to 3.

So go to the main group of the form and set it to 3

This is the result