Can I select which documents show custom meta data?

Can I select which documents show custom meta data? I am generating check lists but the check lists are only for particular documents. Thanks, guys.

Custom metadata is a project-wide setting, so all documents will be able to have a value assigned to that field. You can leave it blank, though, and you do have control over whether to show that column in Outline view, whether to include it in the output document, and so on.