When you create a Posts module, you can use the Single Block tab in the Posts Settings menu to apply variations to specific posts. These variations include text, image, and overlay options (among many others). You will see a pencil icon next to each individual post – simply click on it to start making changes. The variations you decide on can be applied to your posts in one of two ways, and you can use the Post Settings drop-down menu to switch between them. The options you can select are as follows:
By Post ID
This will enable you to apply variations to specific posts. You will see the posts listed by name in the Single Block tab – each one can be customized separately, and the changes you make will persist even if you alter the post order using the Custom Order setting in the same tab.
If you choose this option instead, you will be able to apply variations to positions within the grid, rather than to specific posts. The individual elements will appear as Item no. 1, Item no. 2, and so on, and you can customize each one the same way you would a post.
This means that when you add a new post, all existing posts in the grid will automatically shift and take on the variations specified by their new position. You can use this feature to create a layout that will retain its formatting even when posts are added or removed (and it can be applied to portfolios, pages, and products as well). In addition, you can use the Matrix Amount field to specify how many positions you would like to apply unique variations to before the matrix layout repeats itself.
Note: if you use the Pagination or Load More mode the max Matrix Amount is the Post Count of the General tab itself, screenshot.