I previously posted an example of customizing the multi-column section of the Shopify theme "Dawn" to use as a banner display space, but this can also be centrally managed using meta objects. Here is an example of that configuration.
A configuration example of centralized management using meta objects in a customized multi-column section for banner display in the Shopify theme "Rise/Dawn"

[Setting method 1] Define a meta object, specify a handle, and create an object for the banner you want to display.

[(For Rise/Dawn Themes) Setting Method ②] Modify the code in "sections/multicolumn.liquid"

[(For the Rise/Dawn theme) Setting method 3] Add a "Multi-column" section to the template you want to display in common and specify the handle "common-prouct" of the meta object created in Setting 1 for each column.

