Overriding presentation templates
To modify the presentation template of a Content Template Catalog content type, we can override a copy of the presentation template through a mapping in the top-level site area, or for a specific site area. The top-level site is usually the best place to make this override.
Copy Content Template Catalog presentation templates into the design library and modify them. Use them in template mappings in the sites or map them directly to our own authoring templates. Do not modify the original presentation templates because they will be overwritten when installing Content Template Catalog updates.