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It depends on your theme and has nothing to do with Pods.
A sidebar can be hidden by modifying your theme with PHP or CSS.
Trying Google the name of your theme and “remove sidebar” or “hide sidebar”. Or see https://www.hostinger.com/tutorials/remove-sidebar-wordpress for one example.
And if you mean a button that optionally hides the sidebar, try jQuery .hide(): https://api.jquery.com/hide/