Please see the snapshot below. There already exist PDF, Cite, and DOI. I wanted to add more “buttons” such as this paper is highly cited in the web of science. I wanted to create a new “button” called “Web of Science Highly Cited Paper” without any link attached to it.
I am using the Hugo Academic theme. You can find my repo here.
Please please please post your repo and refer to the theme you are using.
I would attempt to mark pages as “highly cited papers” by adding some frontmatter and then check if that frontmatter is set and add a label.
For usability reasons I would not mix buttons (links that do something when you click it) with labels (markers that do nothing when clicked). Find another way to present those.