Content Grid in Fluid Boxes
I am trying to arrange content inside a Fluid Box Responsive Project. I would like to create a grid like arrangement of content, with several rows of content and each row having several columns. I would like to be able to create a symmetrical grid (grid example below) but also an asymetrical grid (glossary, pinterest, masonry & one and others examples below). At the moment I am only working with images, but it would also be useful to be able to use different types of content in such a grid, especially image, text block, image, text block. Essentially layouts such as the below:

I am playing around with the different settings in the fluid box but can only get either one horizontal row or one vertical column. Is the only way to have one fluid box for each of these and split the content amongst them? If so, how can I add additional rows to a slide after it has been created or can this only be set once at the beginning. Also how would I then keep the content symmetrical from one fluid box to the other.
This is very straightforward to do using Breakpoint projects, how would I achieve this in Fluid Boxes?
I have also tried the following but found when the screen is resized the parts of the grid change order:



