How do I add a common header for each request in Paw?

I need to add a header (or set of headers) for many existing requests (all in the workspace but two), and I would like this header to be added by default to a new request, or could add them without rewriting or copying the whole thing.

All I can think of is to use environment variables for the name and value of the header, but if I have multiple headers I will need to add them to each request, but it is difficult to maintain.

Is there a better way to do this? Is there something like inheritance for queries?