Not sure how this stuff works. I tried typing 'https:\\' before continuing with the WP address, but when I hit 'Enter' the site address still came up without it.
I've subsequently installed the 'HTTPS Everywhere' extension to my Chrome browser, and after ticking the Wrongplanet box, found that https is now enabled in the address bar. However the WP box comes under 'Experimental Rules' and there's a notice that this 'may cause warnings or breakages'. There's also a reference to 'broken MCB', whatever that means.