Admin menu permissions

This probably has a very easily solution, but can’t seem to find an answer anywhere – so probably missing something really obvious…

I’m adding a menu item into the WP admin area – and I want everyone who is a Contributor, all the way up to Administrator to be able to see and access it.

But when I add the following code;

add_submenu_page( 'xx-plugin', ' Options', 'Options', 'contributor', 'mxx-plugin-options',...

Only contributors can see/access it and no-one else. Likewise, if I obviously put it as administrator or editor – only those specific groups can see it.

How to I make a menu item appear and be accessible to all of them?

Thanks
Lloyd