/pw open <menu> -player NotchIsCool -view Olzie12. This will open the menu for NotchIsCool but the contents of the menu will be viewed as Olzie12, this is good for checking other players warps in a menu.
/pw open <menu> -view Olzie12. This will open the menu for the executor (if it isn't console) and will be viewing it as Olzie12.
playeroption to open it for that player.
pw.admin.openand is not suggest to give this to any normal player as they can just view menus as other players and edit their warps.