Its a bad practise to group items while crossing multiple rows (a so called “column” layout). These column layouts will not work properly, since one row will be divided into multiple chunks when the screen gets smaller (for example on a mobile device). In that case, the grouping will be mixed up. The solution is simple; each grouping should have a row that starts a “group” section, and underneath that row you add the elements that belong to the same section by using columns. When the columns are filled up, simply add another row, untill all information is there. Then for the next section, be sure to add a new row, and start that one with a title and repeat the steps till all sections are listed. This video shows how to solve the problem.