Full width Page

I am using this theme Kippis on a localhost getting it ready to go live.
I only have one problem to overcome.

I am using the theme with both side bars. left and right.

I have a page with a map on it. I want to override the two sidebars when I click om the mape page from the menu bar and have it show a full page with the map.
Now in Theme Options > Structure there is a setting :
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Don’t show when displaying these pages. (Enter a list of slugs, separated by space or newline.)
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I am assming that if I put the url for the map page this will drop the two side bars and I will get the full page. Am I correct in thinking this?

I think Im am incorrect buy putting the page url in….

https://localhost/ftbw/?page_id=380

as it doesnt work. It says enter the sluds….and those would be????

Any help would be appreciated Thank you