Format content in the editor where users add blocks?

Hello,

I'm trying to accomplish a design using the squarespace GUI.

I've created a new page, added 5 images total, 3 images that are separated by 2 vertical rules which are also images.

Problem is, I can't get it to look quite right with the way the "grid" is positioning them.

I want the client to be able to click on the images, and text that will be below each of the 3 images, and not have to dig through code because I had to use the code block..

please help!

Would I use something like this:

<squarespace:block-field id="blockField1" columns="12"/>

Which is mentioned here: Open Field Blocks in the support section?

Does this set the format of that grid you drag the "blocks" around in? If so, can someone please tell me how to implement this code and where?

Cheers!