My clients has site which layout consist of blocks of content on different rows. Some rows have just one column and some rows have two or three columns (= blocks of content side by side).
My client would like to be able to easily change the layout and choose whether to have 1-3 columns on a row. The Builders layout editor is a bit cumbersome for changing things very often and it don't allow to add rows in between other rows.
How could I achieve a system where blocks could just be dragged around between rows and creating more columns right away without have to change the whole layout?