Add headers to http request

Hello, I want to access make a GET request to a site, but I need to access with some headers (as cookies among others).
I don’t really understand the way to put them. Could you guide me?
My headers should be like this:

Host: ...
User-Agent: ...
Accept-Language: es-ES,es-AR;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate, br
Referer: ...
DNT: 1
Connection: keep-alive
Cookie: ...
Upgrade-Insecure-Requests: 1

Welcome to the community @carlogarro!

You can add all of them one by one underneath “Headers”:
Screenshot from 2021-01-15 12-32-28