Probably, but exactly how depends on how this page came to be in the first place. Is it a page you added? If so, with what editor? Was it added by a plugin? Which one? Was it added by your theme? Which one? Is it via a custom block? Where did that come from?
If you added the page yourself I might be able to help you. If it was added by other means, I recommend asking the responsible devs through their dedicated support channel.
Forgive my lack of clarity. I am referring to the default page created for a specific project category, and also the project page. I.e.
https://justicium.org/project_category/campaigns/
Pages like that use a template according to hierarchy rules. If you don’t already have a template specific for your project_category taxonomy, you could create one based on archive.php or whatever and customize as desired.
Do you get any result if you just requested https://justicium.org/project_category/? By default you would not. A specific term needs to be specified. If you want a result from such a request, you could create a page by that name and assign a custom page template for it that outputs the links you are after.
