How do I add a website link to my Google+ profile?

Question

Google

There is an example of such a Google+ profile
https://plus.google.com/u/0/115165808115067796539/about
A link to your-sector-of-space.org
is displayed under the profile name How can I add such a link to my profile? I have only My profiles, My publications and Links in the "Links" section.
Neither one, nor the other, nor the third under the name is displayed...
Or is it left from the old functionality, and now you can't add a link to the site at all??
I know that there is such functionality for the company profile in G + (for business), but the question is about a private profile, and in the example just a private profile.

Answer 1

For a long time I drew my site on Google in my profile +
Then it was possible to do this https://plus.google.com/104842359978375235691/about
There were no other options