LibGuides is built using Bootstrap's grid system, and each page is made up of columns and rows. The boxes will always be "read" top-down in column order, meaning that the left-most top box will be read first and everything else in that column before moving to the second column. This is especially evident in the tabbed guide layouts.
There are three ways to add content to a guide: create from scratch, reuse from another source, or copy from another source. LibGuides are meant to be shared, especially from within the same organization. There is no reason for every guide to have a different citation page when you can easily just reuse an existing citation page.