Assigning modified Twig templates


How can I solve this?

+- (=> blog.html.twig)
+- 02.research
+- 03.publications (=> publications.html.twig) and 03.publications are both listing pages. For I want to use the standard Antimatter blog.html.twig template. For 03.publications I want to use a modified template. Where do I set the option to advice Grav to apply the adapted template publications.html.twig to 03.publications?

Figured it out:

Rename 03.publications/ to 03.publications/