Board Thread:Support Requests - Designing Your Wiki/@comment-35234342-20190119121012/@comment-34888194-20190119135149

ProfessorLumius wrote: my wiki has many templates that are not used, i would like to delete them or deactive them You need to be admin or a content moderator to delete a template.

For example, if you want to delete template that says in source mode, then you search Template:Page in the search bar. You can delete it right there as you would delete a page.