Variable sets allow you to create groups of variables, and switch between which set is being used from the Sidebar. Go to the variables section in the sidebar to create, update, and remove variable sets from your project.
Once you’re on the variables section of the Sidebar, either right click or press the 3-dot menu to create/remove/rename variable sets. Or click on one to start editing it’s content.
Beak with a variable set open being edited.
On the project section of the Sidebar, expand the variable sets menu, and for each variable set change which set is currently being used by Beak for requests.
Missing something obvious? Open an issue and it can be discussed.